I have recently gotten back into riding after many years away. I borrowed a friend's dualsport and have been enjoying it, however, I am unsure what bike to buy for my needs.

My riding is 75/25 road/trails. And when I say trails I mean hard-packed dirt with a couple rocks here and there, maybe a few roots as well, maybe a little mud. The roads and paved trails in my town aren't the smoothest.

The question is: do I get a ds or a mountain bike with some more road oriented tires?

I've read a lot that the hybrid/ds bikes are decent on-road and off, but very good at neither. Any input?\

edit: one of the reasons I am considering a mountain bike is that I have enjoyed what I've done offroad so far and plan on exploring it more.

edit2: bikes I've been eyeing in no particular order are Trek 8.5DS, Trek Superfly series, Trek Stache series, KHS Tucson among others.