Like many other users of the Wide Wheel, the two things about it that I disliked were its jerky throttle and lack of key start. For throttle, you were either not accelerating at all or you were accelerating to full speed in the space of 1/8 inch of throttle travel. This makes the scooter very difficult to navigate anywhere you need to travel at a slow, consistent pace (like amongst foot traffic).
I purchased this throttle based on the Fluid Free Ride review saying it was much smoother, and had eliminated the issue that plagued the first version. I didn't find this to be much the case at all. The throttle does engage a bit sooner, but it again goes 0-100 the moment the throttle engages. There might be a SLIGHT improvement in ability to ride at slower speeds, but you're constantly having to lift your thumb off and put it back on sofly to create that slower speed rather than just holding it in the same spot at a lower speed.
All in all, I'm disappointed. Yes, this does add a key start which is nice, so if that's a real issue for you then this solves the problem, but don't expect a totally different throttle. The voltage gauge is ok I guess, but I don't see it adding too much value. Additionally, I like the rubber feel of the old throttle better (this one is just plastic), though that's personal preference. I absolutely love everything else about the Wide Wheel and when I heard that they'd fixed the oft complained about throttle issue, I jumped at the chance to purchase it b/c every thing else Fluid Free Ride has said about the scooter has been totally on point thus far... but this didn't live up to expectations. I really hope there will be an even better version developed soon. Fluid Free Ride customer service has been great up to this point; I hope that continues.