The good ol' D-76 is the traditional stuff. Personally, I've never used it, I've been perfectly happy with my results in XTOL. XTOL comes in 5 liter packets, quite a bit of liquid. You'll get a lot of responses, those two I mentioned should be fine to start. Oh, and D-76 comes in smaller quantities than XTOL.
Also, if you're looking for any fixers, pick up the Heico stuff - it's a cheapo no-name brand, clears any film I've put in it at 2 and a half minutes - can be used with optional hardener (but I don't even know what that's used for!).