With tren giving the most sides I dont see the point when there are better options.
like bad acid reflux (cant eat as much), sleep goes to shit ( cant grow as much) the mental aspect( not happy) raises metabo ( have to eat even more to maintain) night sweats suck too.
I guess if you dont get these sides its fine. but Id rather feel better, be able to sleep and eat to grow during a bulk.
For precontest there is no comparison its the best for bodycomp . You can grow with low calories. Thats where it shines. In a precontest diet you will get most of those sides anyway without the tren so you might as well use it.