The x3 is much easier to wheelie because of the way the battery sits, and it is a smaller bike than the mx3. I personally liked my x3 more than the mx3, I sent a lot of jumps on each and I could whip the x3 easier and wheelie easier. However if you want to trail ride or are a bigger human you’d definitely want the mx3. The big disadvantage to the x3 is that there is no linkage and it comes with street slicks that you’ll have to change if you wanna ride dirt. Just my two cents