I didn't really consider windows based tablets, mostly due to tablet designed radar software only being available for ipad/android. Just out of curiosity, what radar software are you using on your acer and how exactly are you controlling it?
I snagged a touchpad and loaded android (cm7 alpha 2.1) and use radarscope with a bluetooth gps puck. I used the Ram ipad floor mount since the touchpad has the same dimensions and it works perfectly. I setup remote access to the PC but wan't a huge fan of the android apps and the method used to control the PC, I'm sure I would get used to it over time but didn't see the need yet.