RE: Durability of 8ight
Chassis flex has a whole lot to do with the servo issues. That is why Losi came up with the O'ring fix. It's also why spacers are being used and the rubber grommets are a must on the throttle servo as well as not tightening the servo screws all the way. It's all designed to relieve the stress on the radio tray from chassis flex. There have been several post concerning broken servos, most had a broken circuit board. My servo issues ended when I bought the kit chassis and tossed the RTR chassis. The difference in the two is like night and day.
I have a couple friends who bought their 8ight's in the last few weeks and haven't had any issues. Neither of them ever raced a buggy before and all they use theirs for is bashing and running on a backyard track. They installed the O'rings as instructed with their RTR's and did the set up as described in the addendum and not a one problem. The newer RTR have the issues fixed by Losi, or so it seems.
Personally if I did it again I would buy the kit. With the money I've spent upgrading mine I could of had a kit with a choice engine and the same servos I use now. I would still have the same TX because it is a good one. There are numerous parts on the kit that are far improved over the RTR that makes it a much better deal.