Alright, a disclaimer - this is 2001 progressive house. That means darkness, minimal percussive tracks, and some more darkness. People seem to be split about 50 50 on this whole phenomenon, so basically, if you snoozed your way through Digweed's last GU, this mix is categorically not for you.
The opening track of CD1 sets the tone masterfully - apropriately called Night Stalker, it's carried by loping grooves and clattering, unearthly sound FX. the mix moves through the undead trance of the K & Creamer mix of ECVM's Circuit Breaker, before reaching an early peak with the growling klaxons and booty-moving bassline of Prototype's Control of Sound. The mixing is smooth, although not spectacularly so.
Disc 2 carries on in much the same vein, although with more of a trance influence, and a little slower.
All in all, it's a good purchase, especialy now that this stuff is rare as rocking horse dung these days - everyone seems to be playing that crude electrohouse stuff instead - so you can't afford to have a gap in your collection. Buy it, and prepare to vacillate between dancing and hiding behind the sofa.