I'm on a Comp. 5'11, 32" inside leg and riding a large and it feels fine

I'd say you are borderline. If you like a small, chuckable frame then medium would be fine, longer more stretched out go for large. No definite answer.

I did own a 2007 until it was nicked last week. Just over 6' and the large was a stretch with original stem. Try a medium first?

I'm 5'11" and ride a large. The medium needed the seatpost at the very limit of extension for seat up pedalling which I wasn't keen on so went for the large.

Im around 5 10 and short legs, i have a L 2007 model.

What nick jb said. I'm 5' 10" and 31" and it feels on the small side to me. Given time again I'd a) go for a large b) waste my money elsewhere.

Friend of mine has recently bought one - he must be around 6 foot or so & rides a large.
I've ridden it (I'm 5'6") and thought it would be way too big for me, but it was fine. Given the choice, the medium would be a better fit for me but the large was perfectly rideable.

I've got a 2010 comp in Large and I'm 6'2".

You're best off taking both for a spin.

Im 5' 8" and ride a Medium FSR XC. Perfect for me.

5'11"
31" leg
Large 2005 FSR XC Pro

I'd go and sit on one if I were you to avoid making a grands worth of mistake.