I had a XX4 for about a month, but that has nothing to do with the car just I had too much going on. I loved the way it handled and there are quite a few guys at my local track that prefer them over the XXX4. There is one guy who had an X5 but was not thrilled about the battery layout on them. I understand the weight balance thing but he claims he was having issues with cells going bad in that 4x2 configuration. You can definitely tell it handles better then the XXX4 on a rough track for it just seems to roll through the bumps better. I do have to admit I did not like working on it when something went wrong but that is just the nature of any wheeler for that matter.