I don't have an HD, but you wanted opinions...
I got the HD+ mainly because I wanted the bigger screen. You're going from a 7" screen to a 7" screen. You can get them both to run CM10 just fine. So, the question is, is the higher resolution worth the money you'll spend?
I've seen the HD on sale on the Staples web site for $149. If you wait a few months, you might even find it cheaper than that.