Well after reading such good reviews on the Blackstar Fly I thought I'd purchase and I was more than pleased!I wanted a small amp for downstairs for learning and practicing guitar parts that was going to sound great as well as being handy.The Fly has done that job brilliantly,it is permenantly set up in my living room and is just so incredibly handy and hassle free,especially battery powered as you can put it anywhere without worrying about power.Convienience aside,the thing that most surprises is the sound,it's just hard to believe something so small produces such a fantastic "real" amp tone.I've had tiny practice amps before and they sounded just like that,tiny and frankly rubbish but the Fly sounds great,like a real amp,so much so that it has me thinking about getting a higher watt pro gigging Blackstar amp! Clean and dirty,the amp sounds beautiful with a very nice delay and all in a package that fits in my hand,amazing!Battery life seems very very good too,still haven't changed batteries.A word of advice,I would highly recommend getting the pack as the extension cab makes such a huge difference,the amp didn't sound near as good without it and I was very glad that I opted for the pack rather than the amp on it's own,plus you get the power supply.The mp3 connectivity feature is very good too for playing along with tracks.All in all highly recommended.