LOSI
This could be debated for months any kit you buy will have their pros / cons iit all depends on your preference, setup, oils, track and how often you do maintenance.
The only problems I've had on my Losi 2.0 T were rear diff and throttle servos but it was a learning curve problem solved thanks to this forum. Parts are everywhere and cheap and the resale value is pretty high which too me iis important. Also their support is awesome many parts flown in free of charge.