I plan on rotating delts, pecs, tris, and glutes. Tried my quads numerous times first cycle and everytime walked stifflegged for a few days and wasnt worth it. Other sites mentioned no biggie at all and almost zero pain next day. Sure even though this lab might be painless as everyone reports but i can handle some pain since i know the gains will be well worth it. Might even try lats and traps this cycle, any experience with those injection sites?