RE: durable 1/10 touring car?
given the choices the OP has availible to him, Id choose the TT01.
If redcat were an option, Id go with that. The plastics are very flexable and dont break easy on the lightning epx. stock electronics are not great, but same is true of the tt-01 that costs $100 more.
Id go shaft drive for a rental car. belts are better for racing, but all it takes is one person hitting the wall with the throttle wide open to snap a belt. and even if the customers were resonable in how they drive them, belts still require adjustments overtime. You dont want to have to work on every rental car just making adjustments.
shaft drive for sure.
I wouldnt touch the e10 with a 10 foot pole. I had one and felt it was a very poor example of a hobbygrade car. plastics felt cheap, motor mount was a piece of crap, center shaft was plastic (really, why? they should be alloy IMO) I didnt like anything about that chassis.