So it's been a couple years since I left this hobby two years ago out of frustrations from a lack of quality products. I've tried Chinese in-frame junk, as well as purportedly good quality rear-mount 4-stroke Grubee setup. So have there been any products in the last two years that are "game-changers" or offer substantial improvements in durability compared to prior designs? Or has not much changed? I'm getting that itch again, but may just get a used Vespa instead.