I ahve several models. I find that the name brand models have better drivers. Apart from that there is little need for typical use better than any unit out there. I prefer a WAAS enabled unit or at least a puck capable of at least 16 channels. I have noticed guicker signal locks and less drift on these types.
There are several threads indicateing that the $$ increase will be in line with any updated processor. Google 'Intel duo core' or something similar to find out the many advantages of this processor.
I am waiting on it. Most of my work time on the computer is spent heavily multitasking. I think I will see a great benefit.
I believe that Codename 47's review indicated that he had to apply AS to his 5720. I think there used to be a reseller that did apply AS or similar compound to the Sager models, but i don't remember who it was.
I saw a slight improvement in temps on my old Sager, enought to keep the fans from coming on so much.