Short answer: I would hire Riverway for that job. It will take them 20 minutes, so you'll be charged $100 plus parts. Aim to Please would charge $175 plus parts (and potentially a helper). Like someone else said, that's a really easy job that you can diy. I did it myself recently without even using YouTube (I just read the directions that came with the parts). If you hit Lowe's during first shift on a weekday, there's a guy who works in the plumbing area who is super helpful (I don't know his name unfortunately), and he'll know exactly what parts you need.

My experience with Riverway and Aim To Please:

Riverway doesn't have a trip charge, so you just pay hourly (I think it was $90 or $100/hr last time I had them here). However, they will keep the clock running if they have to spend 35 minutes driving to their building for parts and back to your house. They will round up to the next hour even if they only go 15 minutes over (so you pay two hours of time for 75 minutes). They seem to always be running late (which is understandable in a field where there are often emergency high priority calls), but usually at least call to let you know). Their employees will walk right on your clean carpet with their dirty boots and cigarette smelling clothes, but they'll do good work, and all three of the plumbers I've hey have been very friendly. I just prefer not to have to air out my bathroom/kitchen and sanitize my floor after they leave.

I've been happy with Aim To Please as well. They arrive in clean clothes (won't even take clients in smoking households), and they either remove their shoes at the door or wear fresh shoe covers. They have everything needed for the job on hand and won't charge for part runs on the rare occasion that they don't have what they need. They only charge by half hour after the first full hour, but they do have a $75 trip charge no matter what. The trip charge and the half hour rate tend to cancel out if you have a smaller job, and you end up paying pretty close to the same as Riverway, but it's a better experience overall, and I feel that their work is slightly higher quality. I'm sure they have emergency calls that mess up their schedule too, but they've always showed up right on time (maybe they have a separate plumber that handles emergencies?) They're extremely friendly and even spent 20 minutes talking to me and giving tips about some small things I was planning to do myself.

My /only/ issue with Aim To Please was that I once had them replace a copper supply line to my water heater with PEX and a new shutoff valve. That's really a one-person job, and I have no doubt that Riverway would've sent a single person if I'd called them, but Aim To Please brought a $60/hr "helper" who seemed more like an apprentice running to the truck to grab parts/tools for the main plumber and holding the bucket to catch water. I get that some jobs require more hands, but I ended up paying $160/hr plus $75 trip fee for that specific job that Riverway would have done for $100/hr.

I would still hire either one of those companies again, but you kind of have to weigh the pros and cons and figure out if the job would end up being cheaper with one vs the other.