We love our Flaparaps. I use them full time during the day. I loathe having to lay my boy down to get a diaper done up, so I say Flaparaps are a must for a squirmy baby. Super quick to get off and get baby over the potty/toilet, then tuck the flap and they're good to go!
I never put our wraps in the dryer, they dry super fast on the line. I do find that if I don't change the pad right after a miss we get wicking, so if we're going in the car for any length of time or on the plane I put a pair of Sloomb Underwoolies over the Flaparap.
My ~21 lb 12 month old is still using the smallest size belt. He's long and slim and has a particularly petite bottom.