Well, with regards the quality of the drive it appears to be a very similar quality to the Aopen 2040 or Ricoh 7200 -- ie very good!!! For the sort of prices I've seen it at (60UKP+VAT is the lowest price I've ever seen for a 20x writer in the UK by some margin) it is an absolute bargain!!!
The only problem is media. Artec have not updated their firmware yet, so it is still stuck on v1.00. This means that of the 8 media types I've tried so far (Postech, Princo, Verbatim, Taiyo Yuden, CMC Phthalocyanine, Ritek Phthalocyanine, Ricoh and Prodisc) only 4 of these (CMC, Taiyo Yuden, Ricoh and Ritek) will write at 20x. Of course stuff like Kodak should work as well but as for the obscure stuff -- forget it. You should be able to get it to work at 16x with JustSpeed switched off but 20x is just too unreliable.
It has fast and accurate DAE, good write quality (at 20x with the right media), nice build construction, is relatively easy on the eye and is very cheap. Apart from the firmware, what more could you ask for!!