I've received this cab two days ago and used it in the rehearsal of my band yesterday. My amp is a 5e7 copy, 30 - 35 W with 5881 power tubes. Using this very amp, I did not like using an old Fender M80 with its stock speaker as a cab, it sounded "boxy"... weird emphasis on annoying compressed uppermids with lack of bass and clear highs. Replacing M80's stock Fender Special Design (Eminence) Speaker PN 025923 with a new Jensen C12N improved the tone a bit, but still no cigar.
This cab, on the other hand, together with its speaker Celestion V30 sounded very good even though the speaker needs a bit more time to be broken in. It did not sound boxy at all, pretty good for clean stuff and roaring for saturated... Its bass is solid and its uppermids are not that annoying. They are there, don't get me wrong, but they do not sound that bad in this cab.
Kudos to Thomann staff, very nice packaging... the unit is not that heavy. I was pleasantly surprised! Of course, it is not of Mesa quality, i.e. the tolex is "sticky" (not of the highest quality) and the handle could have been better. But then again, the price is at par with a new Celestion v30, so the cab is kinda free... So the quality issue is not something to lose sleep over...
I am happy overall.