As others said, it is goal dependent.
IMO, test is best for:
-people concerned with strength and not looks. Test is a cheap and easy AAS to blast with.
-those concerned with health. I think all other AAS are worse for you than testosterone, mainly because test is the only AAS your body makes naturally. There are studies showing that deca and primo and some other anabolics are harder on the cardiovascular system than test.
-people that like the mental effects of AAS. Test seems to make people feel on top of the world, probably because it increases dopamine.
I personally don't care for test. I wouldn't use it all if it weren't for the fact that your body needs a small amount of testosterone for other functions completely unrelated to muscle growth/strength.
I was doing cycles with no test at all, and noticed I was feeling a little 'off' mentally, so I added in 150mg of enanthate a week... problem was solved within a day.
Reading posts from Disgusted and Buselmo, as well as looking at pics of golden age BB'ers and current middle eastern guys, is all I need to know that test is not for me. I like the all anabolics look.