I have either worked in or owned a lab for over fifteen years. I like the royal paper by kodak but the fuji film. A good lab will ballance the film chanels weekly, a few different ones each day. (ie: kodak 100, 200,400 on monday fuji 100,200,400 on tuesday etc) If you shooting slow film kodak vps is great, fast film fuji super g 800 is also great black and white in color process kodak has the only good one. Agfa has some very good films that are mid range ie:200 and 400 speeds. When buying the lab brand look and make sure it's not polorid or 3m even tho you bring it back to that lab, you just may not bring it back and most labs do not do a good job with that film. But in the end it's your choise just like ford or chev. Look at what your shooting and remember kodak is a yellow base film and does well for people and fuji is a blue base film and is great for landscapes and agfa is great in both cases. I own and shoot canon, but am not a fan of the rebel so you might just stay with mid range speeds ( 200 & 400)
Keith