When compared to most belay devices, the many uses of the Reverso make it stand above the rest. For multipitch on a thinner (ie <10.3mm) rope, this device is great. However, if you are thinking of using this device on ropes near 10.5mm diameter, make sure you try it in the store or something. I own a Maxim Apex 10.5 and on Reverso (autolocking) mode, it takes A LOT of force to take it slack such that on a multipitch climb, I wouldn't be able to pull in 4 pitches worth of rope when belaying from above.
Also to note is the position of the ring from which the device is attached to the anchor when belaying your second. On the BD ATC Guide, the ring is perpendicular. I have found that when using this device on some anchors, it has the tendency to rotate such that the biner gets pressed against the rock and is unable to autolock.
If you are using this device for rappelling, top roping or sport climbing, it is great, even on a 10.5mm rope and the teeth are perfect for holding a climber while they rest on TR.
Hope this helps!