If you pick up the 8IGHT buggy, you will be able to use the same tools that you use on your MF2 and XXX-NT, with no need to carry around an extra set of metric tools.
There's no denying the Losi buggy's record of changing the U.S. 1/8th scale off-road scene. If your local hobby store supports it, it should definitely be a front-runner in your mind when it comes to picking a buggy.
And of course, I'd be more than willing to help you with any questions you might have about it!