Di Prisco is a great music composer and so his stuff for Need For Speed and especially for UT3. UT3 OST is probably the best one in the series, excellent production value by the three composers (Lockdown, To The Death, Outpost, Industrial, Mekalopolis, Firestorm, Necris Attacks, etc - where do you find this unique stuff?).
To be honest the only tracks that stand out for me from U1 are Erosion, Sunspire, Dasa, Newmca12, Terraniux, Cyrene and Isotoxin. From UT... meh, I guess Mech8 - how can you go wrong with Necros anyway. Never really liked the UT1 music due to various tracks being boring (SkyWard, which got remixed for good in UT3) or plain awful (Superfist, Stalwart, Razorback). Even Alexander wasn't happy at all about it.
EDIT: I know you don't like the UT3 music (jeez) but now you can save this whole "DiPrisco is ****" nonsense which is extremely stupid.