Let the hive mind of Engadget get that for you.
"I'm looking for a solid state drive, around 32 to 64GB, for use in my web server. The drive will contain my web sites and the operating system, either Windows Server 2008 R2 or Ubuntu. Large storage is handled by a separate RAID array, so capacity is not an issue. Rather, I am looking for the fastest, longest-lasting, and most reliable drive under $150 that is suitable to my application. Any thoughts? Thanks!"
The tuner spec is false. It has 2 Sat tuners which are both HD and one OTA HD tuner, for a total of 3 HD Tuners. The 622 can send a SD signal to a 2nd TV in the house and down-converts a HD signal to be viewed on the 2nd SD TV, I think that is where some of the confusion is. You should be able to record 2 HD feeds while watching another OTA HD feed, there is also "speculation" that one could record a total of 3 HD feeds at one time, like the 942.