Stunning! The Alpine is streets ahead of my old Sony unit - detail is massively improved and the amount of adjustability is incredible. I won't post a full feature list unless anyone requests it but let it be known that I am pleased! I will make a quick comment on Alpine's "time correction" feature though - fantastic! It allows you to compensate for the delay in sound between left/right/front/rear speakers so that the sound "hits" you at the same time. I initially thought it would be a bit of a gimmick but I'm mightily impressed Installation was a bit of a faff as the positive feed needs to come direct from the battery due to the 4 x 60w amp, but that aside I haven't got a single complaint! Anyone thinking of a new head unit... I cannot recommend the Alpine highly enough K.