I have a Lowracer, Tour Easy, EZ-1, P-38. Out of these 4 bikes the lowracer is the most fun to ride. In town it is hard to see when you stop at a traffic light you can not see over the vehicle next to you. If you ride in town you need a mirror on each side of your helmet. It is very easy to wreck on gravel, sand, dirt, or mud. Other than that it is a great ride. It is the most fun ride in the world to ride the lowracer on the road and just go fast. After a 5 mile warm up ride I can cruise along pretty easy 24 mph of a flat level road. It is a confertable relaxing ride too.
The next most fun bike to ride is the P-38, it is a great ride in town and fast too but not as fast as the Lowracer.
The EZ-1 is a very relaxing fun ride.
I put the Tour Easy at the bottom of my list as the least fun bikes to ride of these 4 bikes.