I did a test prop only cycle - it was my first. It went ok but I didn't get a lot of strength gain as I leaned out more and gained more muscle endurance. Like my max weight on lifts didn't go up much as my reps did. I have done dbol too - got some ok strength gains and crazy pumps.
Tren just gives me nice strength gains, finally buried some of my old maxes on most of my lifts. I actually am in a decent mood most of the time on tren too unlike others who get really agro on it.