Hi Douglas, I run wide bars(730-710) short stems (70-50) on my 26" bikes. All Alloy.
I have several Carbon bars but never real noticed the improvmentd they say they offer probably do to the bikes being full suspension and setup ubersoft
I just switched stock bars on the 29er, which is a XC/rails to trails bike, for a Jones H
and prefer it for bike paths, rails to trails, and XC with a load.
DH 730/50 Love the control and more upright sitting position.
XC 710/70 Wider bars even on the XC bike gives me more control.
29er Jones H