I'm a big fan of test400. Granted i ahvent tried a WHOLE variety of gear, but im just about done a vial of test400 that i stuck at the end of my cycle cause i didnt feel like waitin longer for test e to arrive, and i really like it. noticed a difference, put on a few extra lbs actually while on a super clean cuttin diet, so im damn pleased. That said, it does hurt a bit, but nothin you cant handle prolly.