For long term cycles I like Enth or Cyp. because what ever I'm running with it will be for 12-14 weeks. Deca, Dbol, Primo.
For Tren I like Ace better then Enth., because Tren can give me the Ebee Jeebies, so if I have to bail, it's out of my system in a few days. I also like Test Prop with Tren and Masteron because you shooting ED or EOD anyway. I can only handle Tren for 4-6 weeks.
One exception is Deca dura vs NPP. I like Dura better. Seems to give me better long term and long lasting gains. NPP is good shit tho.