I've had one for a few years in my civic and have mostly had a good experience with it. The only problems...although their not really problems...is that first off your engine will start decelerating much faster if you're driving and let off the gas. So its just a matter of trying to be as consistent on the gas peddle as possible when you're going at at constant speed. Otherwise you will get a nice little jolt each time you let off the gas. they both decelerate equally just about, if u take ur foot off the gas in a manual either way its going to slow down fairly quickly without touching the brakes no matter what..
The other thing I have to watch out for is rough road like right after I start moving at a red light or something. For example, right by my house there is a red light with train tracks right past where you stop, so you're still in first gear when you go over them. They're not nice and flat, they're pretty bumpy and so I have to pretty much let off the gas when I go over them or run the risk of accidentally pumping the gas peddle and make the car start bucking.either way lighter flywheel or not the bucking has nothing to do with the flywheel,it has to do with ur foot tapping the gas back to back, sorry but u fail.
Overall I'm very happy with it, and would buy it again, just a couple little driving quarks when you have one.