Fina is better for cutting, period. It is more anti-catabolic than eq, not to mention you shouldn't get that insane hunger from fina that you do with eq.
But if your stack was test/tren/winny, then you would have an awesome cycle.
10-12 WEEKS. The only cons I have with fina is its toxicity and the fact that I cant drink on that shit. I took fina last summer but hated the fact I couldnt drink when I when out.