I didn't expect this from a behringer piece of gear (let's be honest, they're nowhere near top of the line) but the cabinet emulation is great. It takes all the typical "digital" and harsh sound you get from an overdrive/distortion pedal or a multieffects board (non-emulated of course) and it suddenly sounds like an actual amp+cabinet through the PA. It can also give you all the attenuation you will probably ever need with 2x -20dB pads. Finally as advertised, it can handle amplified signals as well so it can go between your amp and cabinet if you wish a separate signal to the PA for some reason, while still having your actual cabinet blasting. It would be even greater to have some kind of trim control so you could set a lower level for the physical cabinet than the XLR output, but that's probably a bit much to ask at this price. So...5/5 for features.
As a DI, it's certainly not the best out there and certainly it's not totally transparent soundwise, but in any case, it's not something that you can't work with. 4/5 for sound.
I didn't have any problems with mine so far but it needs some time to prove it's reliability. The chasis looks sturdy but the XLR output feels kinda cheap. On the other hand, it's quite inexpensive anyway, so you could probably even have a spare around. I would say it's ok-ish qualitywise so 3-3,5/5 for quality.