I've been doing a bit of research on that myself because I plan on building one over the winter so I can get in to it next year. My current favorite is probably the Five Seven Arrow kit or the Losi 22 Elite with the Exotek Vader chassis conversion
Could look at a slash or dr10 I have experience with those but have had losi cars in the past and losi is a great company. Can't go wrong with any of those really. Parts are plentiful for all and up until now a slash was a custom build only option. I built mine but bought the dr10 rtr and they perform well out of the box.