First HUGE difference is that when you inj suspension, it will hurt like hell BUT it will be in your system very quickly and you have to inj everyday. Enanthate is much longer acting ester and will "release" over time and you inj 2 x's a week or once a week but 2x's is better to keep your levels stable. It all depends on you pain tolerance but I would stick with enenthate. It's my fav.