One possibility is Titanium Backup Pro on the market, but it only works on rooted devices. My budget tablet is apparently rooted from the manufacturer but I imagine brand name ones aren’t. Do you use the same gmail account on both devices? You can share paid (and unpaid) apps this way.
Out of interest, have you tried any ROMs yet?
I did dGB for four weeks (very fast but very stripped out, had to install gallery and email apps from the market etc and the option to stop the trackball button from unlocking the device didn’t work so it kept unlocking in my pocket) Its a pure android ROM with no sense and I may go back to it.
I was missing the look of Sense so I tried Runnymede007 which I think is Sense 3.0 but that only lasted a few days as it was very laggy and kept freezing, requiring a battery pull.
Now using Aurora V6 which I think is a combination of Sense 2.5 and 3, seems much smoother and usable.