My son has had his Quantum for about 3 years now. We have had to replace both motors and his joystick in that short time frame. It just makes me so mad. I was wondering if other parents' boys have this type of chair and if so are they having the same problems?
My son has had his Q600 for about 2 years and the only problem we have had were defective batteries at the beginning. Since we had those replaced it has been great.
We have a Quantum and it has been mostly reliable for us...once the bolt holding one of the front (small) wheels came off but other than that, no issues.