I agree with BigSarge. Tren is such a great compound that I think most people could acheive all of their goals if they never ran anything but tren and test for the rest of their cycling career.
Personally, I can't use it. I get very harsh side effects from it. My side effects include breathing problems, very low energy and nightsweats so bad that I have to get up 3 or 4 times a night to dry off with a towel. I also have very disruptive sleep while on it.
I don't want to disuade anyone because some people have NO side effects at all while on it and others have just 1 or 2 of the side effects and manage them quite well.
If you want to try tren, I recommend the acetate for your first cycle instead of one of the long esters. That way, if you experience bad side effects, you can quite using it and it will clear from your system very quickly.