I'm going to cycle for the first time (unless you count 4ad and M1T) this summer. I need a couple suggestions based upon my unique situation.

1) I'm not a bodybuilder. So, in the bodybuilding sense of the word, I'm not interested in getting 'huge,' but rather am interested in increasing my overall athletic performance. I do not want unneeded gains in mass that can hinder athletic performance.
2) In a nutshell, my exercise program focuses on anaerobic strength and endurance conditioning.
3) I want the cycle to be as short of duraction as possible, while still being efficacious, and worth my time.
4) I want results that last.

So, any ideas on cycle duration, and overall cycle construction? Also, is there any particular AS I should consider using in this cycle? I was thinking winny may be a possibility, but since it's typically used in conjunction with other AS, I don't know what I would pair it with.

Last thing, I know there are tons of different AS available, and I am lucky enough to have access to most of it.