Quality wise I would have to say they are both very close with the nod going to the losi due to the shocks not being composite.
Comparing the RC8T-E to the 8T 2.0 is tough indeed. I love them both and will use both this season. As for driving....just depends on your style. Out of the box the Losi turns and rotates much better around turns but is very loose (oversteer) on the track and requires braking much earlier for sharp turns. The RC8T-E is opposite, and understeers so you can go much deeper into a turn, but you have to begin to turn much sooner and sometimes requires carrying less speed through the turn then the Losi to avoid pushing wide. Also turning radius on the Losi is much better. The Losi turns in a 34inch radius, the RC8T-E does it in 42inches.