I have the 2015 Specialised Enduro Elite 650b – bought about 3 months ago and really happy with it.
It’s reasonably light (Just under 30lbs), covers ground really well for longer XC rides (Partly Down to the Specialized Slaughter tyre which rolls extremely well) and is really fast (Strava segments back this up) and fun on descents. It’s a bit of a issue to remember to hit the climb switch on the shock when going up and remembering to release it before descending!
I had a Nukeproof Mega before which punished me on longer rides, But my legs are way fresher on the Enduro after the equivalent ride. I would not feel apprehensive about taking it on a long day ride – I think it will really help you out in fact.
I swapped out the 34T ring to a 30T ring and swapped out the stem to a 50mm stem and bars to 785 (which is how the 2016 bike is set up). I did not feel the need to change anything else.
Feel free to post back if you need any more specific info.
Cheers