TurboXS has a stage 3, but most people will either go stage 2 or jump right to 4. IIRC, and I haven't double checked, stage 3 = stage 4 - FMIC.

And Faded, Vishnu also sells "staged" kits (their stage 0 is a reflash only) as does Prodrive (with their Prodrive Performance Packs or whatever the PPP stands for). You can be "Faded Stage III" (note the awesome use of Roman numerals instead of just a standard numeric )

I just call myself "Cobb Stage 2+" since I have alot of stuff they don't "officially" support.