I had previously owned an E-TON BeamerII,but it was stolen from my garage,lock & cable.Little did I know it was a blesing in disguise. I immediatley started looking for another moped but was definitely not going to buy another E-TON.I happened upon a small cycle shop that sold the UM X-PEED 50.The difference in the two bikes was astonishing.The X-PEED seems to have at least twice the power of the E-TON.The X-PEED easily does 45mph on level ground whereas the E-TON struggled to do 30mph and tended to run hot and shut down numerous times.The X-PEED on the other hand carries me and my wife up signifigant grades while laboring very little. The E-TON would literally stop pulling and I would have to get off and let my wife ride it to the top.Iam very pleased with this product and its 3 year warranty is unbeatable.I am anxious to get my hands on some aftermarket parts to give it even more power.