I have the 18-55 and 22 but I have only had the kit for two weeks. I think they both have a purpose and the 18055 is plenty sharp - I have seen many examples of nice keepers taken with the 18-55. It's not that much and you could sell it if you don't like it. You can find them on eBay for around $100 to the door.
Ha. It's not that the 18-55 is bad, but that the 22mm is just that much better. I just picked up the 11-22, and that's a ripping good little lens. Better again than the 18-55. Well, my one anyway. I also picked up the M to EF adapter, mainly for the 40mm pancake. I suspect I'll never use the 18-55 again, as the 11-22, 22 pancake & 40 pancake make an excellent, compact little setup. Covering most of what I like shooting. As long as it doesn't move