Replacement brake caliper - which to get?
So, brake fluid is leaking from my passenger rear brake caliper pretty bad. I am looking for a new brake caliper, preferrably remanufacturerd so I'm not spending an arm and a leg. I've looked everywhere and there seems to be so many options. I would prefer to get in-person (O'Reilly Auto, Advanced Auto, Autozone, etc) but I do have Amazon Prime as an option.
I have a 2009 Pontiac G6 GT, and don't need anything super fancy (brembos or anything like that). Mainly as close to OEM as possible, but won't break off and leave me without any stopping power. Since brake fluid is leaking from one caliper, should I replace both rears, or since my car is a 2009, would I be fine replacing just one? I'm guessing I need to replace both rear pads as well, yes?
In short: Any recommendations on a new caliper that won't break the bank? Open to many options. Not really sure what's "good" and what's "poor" when it comes to calipers. I just don't want to break the bank!