10 weeks is to long in my opinion, 8 weeks is better.
I don't know what all this talk is about omna/sust having the same half life as enanthate. THAT IS JUST PLAIN WRONG. Most guys don't know what they are talking about with this. 10 weeks of omna at 500mg/week is basically 16 weeks of supraphysiological levels of testosterone levels. 10 weeks of enanthate with a taper at at the last week is basically 11-12 weeks of supraphysiological levels of testosterone. People have developed the idea that sust/oman is better beause they don't see crashes until months after cycle when the test is all gone. They think that means that they keep their gains better even though the loss of gains is just delayed. With short enanthate cycles you won't lose that much and whatever you do lose you lose right away.