The MGT 3.0 looked cool, but I seem to remember looking at the layout when I was deciding on my rustler replacement and thought it might be a bit tight. Was hard to really tell from the early shots I saw, so I'd be curious to see one done.
The GT10 does look nice as well, and the slipper clutch is nice, but it would all come down to the type of driving you do. I don't like to beat the piss out of my trucks, and don't try to jump houses either, and so far they've all done well. The nice part was I put mashers on my CRT for offroading, but also have buggy dirt hogs for road driving or milder off road. I plan to also occasionally take it to the track as well. With the mashers it does really well in the grass and the construction lots I play in. I was blasting it thru the snow here today even. Granted its COG is way higher and drives more like a MT than truggy, but it climbs and bashes great. In truggy mode on the street its a nimble little rocket.
Any of these choices sound good and may just come down to your needs and perhaps available parts from LHS.