Okay, just so we've got this straight: These are not "which do you suggest?" type supplements. OXevol is a superdrol clone. Oxevol is a STEROID. Not 'like a steroid', is a steriod. Dianevol is Oxevol, they got in trouble for some reason and had to change the name. Testevol is a test booster, which is not a steroid.
Tren Extreme is also a steroid. You will need to run post cycle therapy after a cycle of any of the steroids. If you don't know what post cycle therapy is, you've got a lot of reading to do BEFORE you even think about running one of these. Really. Please do a lot of reading, so that you know what you are getting into, and what you are doing. Check out the Anabolics forums for a start.
http://anabolicminds.com/forum/steroids/64820-designer-steroid-prohormone.html
http://anabolicminds.com/forum/post-cycle-therapy/66113-no-excuses-no.html
(BTW, I mean no offense to you, LiftNDestroy, by repeating what you already said, but this stuff bears repeating. *sigh*)