For the past twelve months I’ve used a Reverb and a Command Post on both my FS bikes. The Reverb has the advantage of not having only three presents (although Specialized have resolved this now) and it doesn’t punch you in the spuds with a vengeance if caught unawares.
However, two hose bleeds later I’m not completely satisfied with the Reverb experience.
The Command Post will smack you in the taint, but it’s easy to adjust and generally maintenance free…be warned though that they aren’t user serviceable, even though some folk say that they are. I still cannot get the head off mine, so it’s off to Spesh at some point for TLC. They do like a bit of oil dribbled into the air valve on occasion too.
My new bike has an X-Fusion HiLo. The salesman dropped in the line “of course when it goes, you can fit a Reverb Stealth”.