The DRX595 digibox will allow you to access both HD and SD channels, although the SD output is upscaled on to the HDMI output allowing for better overall picture quality.
The DRX595 does NOT have a built in hard drive so you will be unable to pause, rewind or record programmes. You will need the Sky + HD box in order to do this.
The DRX595 does NOT have a built in modulator, so therefore must be connected to your television via either HDMI or scart connection.
The Sky DRX890 Sky+ HD Digibox carries a well crafted dark black (matt) curved shape, plus the improved smaller case design only found in this latest generation digibox; also comes with matching remote. The unit contains the larger *500GB capacity hard drive for recording even more of your favourite programmes with Sky+ (Sky+ requires an active subscription to Sky), allowing you to record up to 185 hours of SD and 60 hours of HD.