The one thing I really like about my newest Maxx is that I bought it on eBay for $500. It's got Hardcore extended chassis, RPM arms, RRP gears throughout, CVDs, OS .21, etc., etc. Plus the guy threw in an extra OS .21 motor, radio gear, bags full of spare parts, lots of high-quality tools and hundreds of brand new fasteners. He built it to race, so it is scratched up, but it handles beautifully, much better than my stock 2.5 Maxx with a Picco P2.
So my advice for those contemplating a new Maxx is check out eBay. I see lots of trucks there that people have spent tons of money on. With prudent and careful shopping (and a little luck), you can get a Maxximum truck for minimum cash.
To respond to the original question in this thread, my biggest dislike is the puny, tempermental .15 engine Traxxas seems hellbent on using. I can't believe they are using it in the Revo too.