Tomorrow i start my first cycle. I'll be running sustanon at 500mg/w for 10 weeks. Is this inferior to a test E cycle? Also I have the option to switch at 5 weeks to a different kind of test. It's something 275. I just found out about it today and was wondering if switching a test combo in the middle of a cycle is good or bad idea? I'm 26 5'10 198 17% body fat 2 1/2 years traning.