A reputation well deserved! Fantastic sounds, right out of the box and with no pedals. I cant imagine what else I would buy for this price that sounds (and looks) this good. Reverb by Blackstar is the best I have heard built-in to an amp, and there's a lot of it here.
Two important points: The ISF only applies to the OD channel, so no clean ISF - BUT - turn down the gain and use the OD channel semi-clean, and its fine. Also, don't be fooled by the 5W sticker - this is loud!
I was going to put a negative in here as well, but I cant think of one. I guess I heard they're hard and complex to modify, but I have no intention whatsoever of even trying.