Hey mang, Im no expert, but I'll give some basics that Ive read to get the ball rollin'
Basically, from what Ive read, you are comparing 2 pretty different compounds.
Tren will be much stronger and faster acting, also though, likely more sides. The EQ will be much slower acting and 'weaker' and thus likely less sides too.
Personally myself, Ive always though the EQ being slower acting, pretty dry and thus the gains (though smaller) would be quality, easier to keep sounds a 'better' way to go to me. (to me. Lol)
However, lots of people on here rave about Tren, likely because like I said, it just gets them more results faster.
So, keep researching, hopefully more peeps will chime in, and see what your priorities are, then go to 'er. Lol