I’ve been running Rapid Rise mechs for a while. It only makes sense if you use a thumb push for both up and down shifts, otherwise you can’t easily shift to a lower gear while braking (unless you brake with your middle finger and shift with your index finger). I find using my thumb for both is a bit awkward so I’ll be glad to see the back of my RR mechs – not sure why I bought into it originally, but after buying an XTR mech I got an LX RR mech when I got a second bike for the sake of consistency. Just replaced the LX one with a normal Ultegra mech so will have to live with my bikes shifting in different ways until I can afford to replace the XTR – could be annoying.
Love 1.5″ head-tubes. Allows you to use any type of steerer or to use head angle changing cups. Look a little out of proportion on some bikes but on my beefy Intense Uzzi VPX anything else would look weird.
Also love 135mm x 12mm rear axles, which I have on the Intense and my Orange 5, but they do limit your choice of wheels a little.