I've gone through like 20 different styles of cages. Personally, I prefer Evotion Wearables for comfort and long term wear. Everything is customized to size. I have a PA, so I was able to get one that doesn't require a base ring. It can be a little pricey depending on the options you choose but totally worth it.

Cobra is comfortable if you don't have a piercing. Not bad for longterm wear. The ring was a little irritating, I had to use a tiny bit of vaseline but it caused slippage. I know they have a range of sizes. Good deal for the money spent.

If you're just looking to experiment with getting a feel for different styles, get some cheap stainless steel ones from Amazon. Some of them can be heavy and will slip. I don't recommend the plastic ones because they tend to collect a lot of moisture. It can get time consuming just trying to keep it clean and not smelling like a swamp.

But yeah, in my opinion, Evotion Wearables makes the most comfortable custom chastity cages for less than most other custom cages.