from memory...
don't bother with anything less than a cdx; not much extra to pay for the used market but loads of toys, anyway... for the facelifts from 2002
cd - electric windows x 4; electric mirrors, six speaker stereo with single cd player, climate control (inc air conditioning), trip computer, alloy wheels
cdx - as cd PLUS, heated front seats, electric seats, xenon headlamps, electric sunroof, better alloys, cd player with 4 disc magazine, cruise control
elite - every toy going nearly - as cdx PLUS - electric memory seats, rear blind (up to 52 plate then removed), leather interior, sat nav system, heated rear seats, automatic dipping rear view mirror.
The 2.6 or 3.0/3.2 come with traction control as standard.
Don't bother with the MV6 since this looks sportier on the outside (sportier alloy and spoiler) but closer to the GLS/CD spec inside.
If you click in 'used car specification' withing google.co.uk , check out the virgin site about two options down and follow prompts to used car specifications - selecting 'compare' when you've selected two trim models.
Hope this helps,
Keith