Something is telling me that whatever that new Jem is, it won't really measure up to either the 10 or the 7vwh.
If you have the money AND the opportunity to buy a 10, i don't see a reason not to buy it. I think buying a 7vwh is a lot easier, so you can always do that later on.
But then again -and boy this is cliche- but it's all a matter of opinion, some like a 7vwh better than a 10, and some don't. We can't tell you in which category you fall.
Oh well, if you dig the DNA, my guess is that you dig the 10 better than the VWH.
My girlfriend says that girls dig white guitars better than black ones, but hey, she dug me too and i have a 10. ;->