I have had a bit of an interest from a few clients/potential clients lately, and I have decided that perhaps I should start offering XEN VPS as well as my usual OpenVZ VPS; what are your opinions on this?

Pro's/Con's, suggestions?

There was a good thread on this from the end of last year(if you're willing to read something that old) in the VPS section that touches some of the technicals of each at the time. Probably a good bit is still relevant.

http://www.webhostingtalk.com/showthread.php?t=648087

Edit: Actually a couple of good comparison debates:
http://www.webhostingtalk.com/showthread.php?t=609714
http://www.webhostingtalk.com/showthread.php?t=610056


Thanks,
Chris