Is the problem with the MX2 simply it has a different battery, less powerful then MX1? Correct me if I am wrong but with the MX1 you push to activate the motor and grab the hand rims to deactivate the motor? And with the MX2 you push to activate the motor and then tap once to deactivate the motor? The activate/deactivate actions seem very similar.
With the MX2+, you tap twice to activate the motor. It increases in speed until you tap once to maintain that particular speed, and then tap twice to deactivate the motor. I have the MX2+ and I find it to be very dangerous. I have changed the mode to MX1 to simply have better control of the wheelchair. I haven't had the device long enough to drain the battery down to zero so I'm not sure if the MX2+ mode uses more juice than the MX1 mode. But I definitely have more control in the MX1 mode for sure. It's certainly a very powerful little device and I find no need to go as fast as it is capable of doing. I can just imagine going 5-6 mph and hitting a crack in the pavement and I would go flying out of my wheelchair face first onto the asphalt. We still have plenty of snow on the ground here so I haven't been able to get out that much into parking lots, sidewalks and other surfaces but I hope the battery life isn't as bad as I have been reading about here.