although I've enjoyed riding my Pivot Mach 5 for the last two years I'm finding myself ready for larger diameter wheels. However, the chance of being able to actually ride a small demo bike seems very slim. I'm wondering if anyone riding a small 29er or 650B would care to comment on what they've liked or not liked. I like what I've read about Pivot 429 and the Niner RIP9 so far but riding is different from reading. Thanks.