I've been reluctant to say I like these, but the fact is, I listen to them while playing WOHD a LOT - so it's time I face the facts...

Armin Van Buuren - A State Of Trance Year Mix 2008

It flows so smoothly, yet it has enough beat for Wipeout, I have it ripped as a single track - so it progresses nicely. Especially good for a long TT / SL session, or tournaments.

Nightmusic Volume 3 Mixed By The Thrillseekers

Another good one I've been playing to for a while.

Both of these have vocals, but they aren't distracting at all, the music seems to keep pace even with.