Hoiman,
Since you loved the sound of the SP1.7, you will be even more thrilled with the SP2. It is not just new, it is incredible -- well worth the wait. They take their time and do it right. It has been just over a month since I accepted delivery on mine, after waiting almost that long from the time of my order to receipt at the dealer (actually about three weeks) and every time I listen to music or enjoy a movie while playing the soundtrack through it, I am glad I mustered the patience to wait to get this unit through my local authorized Bryston dealer instead of jumping for something of lesser quality that someone else had in stock. The sound is revelatory: detailed without being overly analytical, coherent, properly supportive of the sound stage the speakers are capable of laying out, and absolutely non-fatiguing with extended listening.
I'm guessing that you probably have a decent power amp and source component along with some really fine speakers to bring out best from the SP2's exquisite performance. Just to calibrate its performance in relation to some other equipment I've tried over the years, I've auditioned it with some lesser components I had laying about, including the amplifier section of an old receiver, and it acquitted itself quite well even with those. However, you really get the value of your investment by mating it with other first class components such as a Bryston 9B and Magnepan speakers all around.
Hope you get your SP2 before too long, and then enjoy it as much as I am enjoying mine! (I'm glad I had one "specially made for me", too.)
Burke