I saw your post on the 26" wheeled B-side.
I have been running 26” wheels exclusively on my B-side for over a year In fact I purchased it with that intent. I have the 13.5” model.
I have outfitted my bike with many of my favorite vintage components, and a few updated ones: Rock Shox Revelation 90-135 coil spring fork. 9 speed XT drivetrain with compact 5 bolt cranks, 44/32/20 chain rings, XT rear derailleurs, XT 12x34 cassette, Dura Ace shifters with Paul’s Thumbies mounts. Avid BB7 brakes. Mavic wheels with WTB Mutano-Raptor 2.5/Nano-Raptor 2.1 tires. 30 degree sweep handlebar with Ergon grips. Cane Creek Thud Buster ST post.
I have been riding MTBs since the late 70’s. I have been through more bikes than I care to count. The B-side geometry is a perfect fit for me. But even more than that, I can honestly say it is the best all around MTB I have ever ridden. Then again, I also rather fond on my Soma Groove and ES as well.