That RK3288 is super nice, I hope JXD upgrades the 7800B to something with that in it. (Uses the 3188 right now I think.)
Out of curiosity to see what was out right now.... lol
I found this one, you think it's any good?
http://dealsprime.com/ugoos-ut3-android-4-4-mini-pc-quad-core-rk3288-1-8ghz-bt-tv-box.html
At 130 bucks it's almost at my impulse buy price.
Right now the only two or three TV boxes with the RK3288 are around, Ugoos being one of them. I'd say 1st invest atleast 20-30 minutes of your time in that device's forums if they exist.
The Wifi and actual software performance would be my main focus, If you have atleast a RK3288, then you're set on CPU and GPU performance and RAM is an afterthought on Android, you only need 1GB, but its always nice to have 2GB. Antennas are always a good sign, and the specs mention 802.11 a and n, so hassle-free video streaming is likely. So at those specs, you really only need to worry about software. If there are any deal-breaking bugs, find them out. Many TV boxes with RK3188 came with Android builds that wouldn't load Netflix, so its very important to see if bugs are minor or major annoyances. Performance you need not worry as RK3288's GPU is plenty for any Android app on the market. 8GB storage translates to 7.5GB usable (usually) and 300-500MB of that is often OS, leaving a little more than 7GB for apps. 7GB is fine for many, but if you're interested in HD games that often use 1-3GB, then you want to setup apps2SD and you want that SD to be a swanky high-performance one.
If I had $130, which I don't, I'd probably get it, but ordering and returning to and from China is a pain, so if you're going to pick it, be sure.