Oh, I know this post is old, but it's new to me! My boys and I have tons of fun with an Axial SCX10. It's currently on the workbench with a twisted main driveshaft, but that's the most major damage its seen after a year of hard driving mostly done by 5 and 9 year boys. I'd love to get something faster, but the SCX10 is tons of fun to take crawling on the forest trail in our neighborhood, where something that did 20+ mph just wouldn't work (at least not after it ran into it's first tree), and it can climb over just about anything. Also, after all the upgrades to my tank this year (CO2 and Neptune Apex) and the planned upgrade of the tank itself to a 48g rimless next year, there isn't any money left over for other 'toys'. That reminds me though, I need to order the parts of the SCX10. Never put too much thought into leaving the ground with RC - it's too much work to find a place to fly a plane and my brother-in-law has a Blade 450 heli and I know how much he spends on fixing it . . .
That mini quad looks like fun! My in-laws got RC UFOs from Costco for the boys for Christmas (basically a cheap mini coax heli with a cage around it), and my 9 year old is a better pilot than I am now.
-Justin