"It depends" . . .
Actually both of them have been updated recently. So was asking for a comparison w.r.t to the newer versions of each.
I think the answer to your question depends on what you plan to do with the
PC side of things.
For example, I have XP Pro and Windows 7 VMs in VMware. I use both to
resolve Word/Excel/PowerPoint compatibility problems with my clients. I
also use XP Pro to connect my wife's camcorder and download video files via
USB. I have downloaded PC files onto the Mac desktop, then fired up XP Pro
and installed those files off the shared PC desktop with absolutely no issues.
But I don't play any PC games. VMware is fine (and very fast) for what I
need, but it may not be for you.
Whatever you decide, get 4GB RAM . . .
My $0.02 . . .