When I’m not using expired film, my standbys for color negative are
Fujifilm NPH 400
Kodak ULTRA 400UC
Kodak PORTRA 400VC
Fujifilm FUJICOLOR PRO 400H
The 400 speed seems to be a nice compromise between being able to use a wide variety of f-stops and shutter speeds, and in the larger format, grain isn’t a problem. I order up a bunch from B&H every so often.
I’ve heard, but have not tried yet, that WalMart will process 120 film by mailing it out to a central location. I wouldn’t trust them with anything super-important, but it might be a cheap way to process color while you’re experimenting and getting used to 120.