I would look more for the KAF 8300 chip set.
Brands that make them are
FLI, SBIG, QSI, QHY
FLI being noted for its really good electronics and build quality
SBIG being an old school name, but have recently started integrating its equipment
QSI have done a great job of combining the Filter wheel, and guiding into the same bundle. the new 600 series has addressed cooling and download issues. also 36mm filters are able to be used (reduction in cost).
QHY, excelent bang for buck, they are not as refined as the previous three but hey they are generally 1000 cheaper and come as a all inclusive pack (mono cam, electronic CFW and filters to get you going)
The only other thing that you will want to look at is getting a field flattener for your apo other wise you will take photos similar to star trek enterprise going into warp
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