Finally paid for my Chinese-carbon fibre frame... although this one's from Taiwan rather than China.  I've pretty much dialed in to a 2x setup.  I loved the simplicity of a 1x but I missed being able to go faster when I do my monthly 100km rides.

Am currently in the crossroad choosing between going 2x10 or 2x11 Shimano XT (38T/28T) groupset.  My current 29er is close to 32lbs and sporting a 1x10 (32T chainring and 11-42T sprocket... 42T expansion ring on the sprocket).  And for the steepest climb in town, in most cases, I can climb it without using the 42T.  The new bike which this group set will be installed on is (l'm hoping) in the 22-24lbs range.  So naturaly, logic says I can get by with a 2x10 setup.  And put the saving and get me a Fox 32 fork. 

But since I'm not exactly that well verse with bike parts I think it's better to ask what am I missing if I don't go 1x11?  Is it just the extra gear range?  Or the shifters, derailure, and/or hydraulic brakes have significant performance differences.

Help make a better decision.  Thanks a bunch.

Hi guys.  I see myself getting a new bike this year and a bit on the crossroad with 3 choices of 29er HD frames.  And the Chiner carbon fibre frame is among them.

My riding preferences: 
XC, though I'm more recreational rider.  Never race and don't see myself doing it.
I ride pretty much every weekend, 50-100km, mixed trail and/or paved road.
I've been known to take my 29er on 160-200km road trips, once or twice a year.
I don't do aggressive trails.  I got nothing to prove and I'm not ashame to push or carry the bike if I'm not confident with riding down that scary slope.
My current setup is a 7yrs old Jamis Durango 29er (but 6 years with me), pretty much only the frame is original (and it is repainted), it is currently around 32lbs.

I'll be 50 in a couple of years and weighs around 175lbs.  While I still have the will to push the pedals, I simply can't ignore the fact that my body is starting to complain and asking for a lighter bike.  A 10lbs off the new setup is very doable and pretty much the target.
Btw, I'm from the Philippines.  We only got 2 seasons over here... very wet and dry.

I have absolutely no experience with carbon fibre (CF) bikes (or parts).  Was never the type who jumps into the "what's new" or "hype or hip" bandwagon (except for going 29er).  Always make do with what I have but again the body is complaining... So I'm currently in the research stage.  I've read some say the CF frames (in general) can last a lifetime, but it seems "lifetime" refers to "lifetime of that particular CF frame", not the rider or the bike co.  And so far my readings gave me the impression that folks are replacing their CF bikes at an average rate of 3 years.  The confidence to go Chiner CF is currently evading me despite that a lot have jump into it.  So the big question is "How old are your Chiner CF bikes in service?"  Have any survive 5 years of use (or abuse)?  The plan is for this bike to last me at least 5 years.

Hoping your generous input can help me make a better decision.  Thanks.