I was in the same boat but I purchased a Trek 7100 with the suspension forks and I wish I didn't because realistically 99% of my riding is on smooth, paved surfaces. Yeah, I "thought" I "might" want to go off the paved trails once in a while but it only happened once and I didn't even care for it.

Without getting all technical here I recommend you take a few moments, sit back and figure out how much time you will be riding and where. I personally think there isn't "one" bike for every application. That's more of a marketing concept for manufacturers. Buy something that you will get the most use out of. If I had it to do over I'd buy an FX.

BTW, I have the 17.5 frame and I'm only 5'8". You would need a something bigger trust me. Sometimes I feel my 17.5 is way too small, even for me.