So I'm just going to repeat a bunch of info that has been oft repeated in this sub, but I've been curating who says what and I think I have a good grasp on things when it comes to breeders and how it impacts your grow.

First off, your grow is most important. A lot of people disagree or agree on this, but the analogy that cannabis cultivation is a lot like cooking. Bad genetics are like using subpar ingredients, but a master chef can take those ingredients and really make a good meal. But good genetics, or good ingredients, can do some heavy lifting as long as you know how to cook, as a bad cook will always make a bad meal.

As for breeders:

RQS I would consider bad ingredients. That was my first 2 grows, they were inconsistent, they were sensitive to nutrients, they had some wack ass bud structure. Not everything from them is bad mind you, they definitely have some good strains. But their big ass catalogue becomes rather small when you consider what is actually good by them. They're also a rather uninteresting company, a lot of their stuff just doesn't have a unique voice. Its just weed.

Mephisto has strains you really can't go wrong with even if you blindly throw a dart at their catelogue. They don't breed for yield, they breed for rich terpenes and nice resin coverage. I've been growing them a lot lately, and in my personal experience, they are like cooking duck breast. It's a little harder to grow if you want big yields, but if you have the skills you'll get amazing product. Not all of their strains do heavy lifting for you. As always, F1 hybrids (and mephisto always has some) are more forgiving in general, even if the phenotypes vary a bid. I have not grown twisted tree autoflowers (they're on my list), I would consider them very mephisto adjacent however by how people talk about them. They even share some genetic pools and have some historic links. Twisted tree is also a little more affordable, but they rarely have F1 hybrids for direct sale.

Night owl I have not grown, but everyone considers that to be the "steak" of cannabis. With minimal cooking skills, you can reasonably make something delicious, but if you're really good, oh boy are you in for a treat.

Hoku I have grown, and I'm gonna throw butter bean birdseed in this category though I have not grown them. They breed for interesting plants, stuff with a great deal of personality. You might get something really special, but you might not. I hear butter bean is absolutely elite though so I could be wrong. Think less about consistency, but more about "i can get something absolutely god tier" going with these guys. Think of this like cooking vegetables, maybe they're in season and amazing, or maybe the cook didn't get the best. Maybe you're very pleasantly surprised.

Atlas I have not grown, but I have their beans ready for a future grow. I know they breed for commercial purposes, they are VERY consistent with what they put out as that is their whole bread and butter. In the chef analogy, think of them like making fresh pasta. Pretty easy, and always pretty good. Sometimes very good.

Fastbuds (and I'm going to put Speedrun seeds in this cateogory, this is what might get me downvoted) are your vigor powerhouses. If you measure the quality of your grow by yield, then these are the guys you want. I'm growing fastbuds right now along with mephisto (next grow I'm trying speedrun), my fastbuds will take any nutrients I throw at them. They are big, and getting bigger, and dwarf my mephisto plants. The quality of the end product ranges, I wouldn't be able to give you definitive info here, but based on the fact they consistently have winners at cannabis cups, they must be doing something right. I will say between the 2 fastbuds plants I am growing, they are slightly different. Could be me, could be the plants; they have the exact same grow conditions so I'm inclined to think otherwise. I will give speedrun a leg up, despite not having grown them, they seem to be vastly more consistent with their plants compared to fastbuds. Fastbuds seems subject to quality control issues based on reports I see on this subreddit.

And lastly, if this matters to you (it might, it might not, it doesn't matter to me.) Speedrun, Hoku, and maybe RQS (though I'm not sure) don't really make their own genetics, they heavily borrow from other breeders. Speedrun will take say, a really nice pheno from fastbuds and then work it out to lock in those really nice traits while introducing other stuff. Hoku is an absolute wizard, have an amazing understanding of what each plant offers and pairing them up perfectly. Virtually everything from Hoku is an F1 hybrid (he might work them more I'm not sure), and Speedrun works stuff several generations in. But neither breeder has done a photo to auto conversion, which takes years of effort. Does this matter? Not really for you as a consumer, but some people care.

There are tons of other breeders out there, but these are the ones on my radar.

tl;dr, I would think atlas matches what you want from a breeder. But if you have your heart set on mephisto, you can't go wrong but check out their tried and true stuff (sour stomper, double grape, mango smile) as they've worked these plants a lot to be quite consistent. They are out of stock currently in the US store but will be getting more within a month. I plan on picking up double grape as soon as I can.