You can run a cycle in a 1:1, 1:2, 2:1 ratio. There is no wrong but there are obviously some ground rules. The data you are looking for really isn't out there and the hypothetical of some of it really isn't relavent. I personally like using tes/tren and different ratios yield a different look. Each cycle I vary it just a little to find MY sweet spot. So the point is, after multiple tes/tren cycles I know what really works. Btw, I think tes/ deca at 500/400 for hypertrophy is the way to go. Less deca and you get joint relief, less tes and ehhhhhh....not as productive as it could be.