I'm in the same situation (looking for a scaler for my 808) and when I called AVS and asked Jason this question, it basically seemed like the CS-HD was a step ahead of the QuadScan in all respects. Sadly, I don't remember the details an the CS-HD had not been released at the time so there were no reviews out. But I bet if you call Jason he can give you the specifics that I'm not remembering.
Let me know what you get...I still have not bought anything!
You may want to check out the ESI VLS-2000. It will output 960P, although I can't seem to get it to work with my 1209. 720P looks great. I'm still working on the 960P (see my other post about 960P black bands). I had a Quadscan before this scaler I used with my 701S and I like the ESI much better. No experience with the Centerstage HD.
I use a BG808s and previously owned a Quadscan Pro which is very close to the Elite. I have moved up to the CS-1 which is like the CS-HD
Basically better picture and more flexibility. The QS Pro can't do 1280 * 720. If you can get the QS really cheap - then it won't hurt. It is still a very good scaler IMO for $. I picked up the CS-1 for a real good price from Jason himself here at AVS. There is a small bug with the interlaced component inputs on the CS-1 / BG808 combo that others have reported here as well in 1280 * 720. This problem does not exist when using the component progressive inputs.
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