Well, as far as I know this model has been out there since the late 90' (or so) and I can tell that my model was delivered quite quick and in good shape (thanks to Thomann outstanding services). The amp sounded great from the very beginning and, in all honesty, I loved it.
The clean channel is unusually good, and don't get me wrong but the Marshall amps are definetely not known for their clean channel as you may know. Good for jazz and other light stuff (I personally use it for Dire Straits songs)
The crunch channel gives you that classic 60' rock tone that if you enjoy, then you'll enjoy it.
OD1 is a great channel for 80'-like heavy metal stuff and OD2 is an even gainier channel for even heavies stuff. Good for solos though.
Cons:
The only cons I have found are, it's a little too bright (the highs are way too sharp), but it works way more smoothly with it if you roll down the highs just an idea.
Also, I had problems with one of the power valves (bought in May and needed reparation in August, even though I didn't use it for extended periods of time and at great volume) but the Thomann customer-service was kind enough to help me out.
Pretty much that's it about this amp. But if you get your hands on one of these bad boys, then you'll have quite a great companion.