Out of the three the revo would be last on my list and to compare it to a xxl and say its better is nuts to me. If it were me Id go with the xxl as there is still tons of parts available and will be for a very long time the xxl is one of the absolute toughest trucks you can get. Its big fast mean easy as all heck to tune and keep tuned and its also easy to work on. The platform is one of the simplest designs to work on the only tricky part is when you want to change out your steering servos but who changes them all the time? Id def go with the xxl but I may also be a bit biased to the losi lst line of trucks having 13 of them myself alot of guys will say the muggy is the ultimate basher but trying to find parts for a muggy is near impossible so stick with a xxl and you wont regret it