My husband recently searched high and low for a tailor to alter a jacket he bought. It was at least a size too big, and had to basically be rebuilt to fit properly.
The work from Clothes Encounters was perfect -- you would never know the jacket wasn't picked up off the rack that way. She was also very friendly and professional, and unlike many tailors does maintain a storefront on Greenwood Ave.
The price was probably on the high end of what my husband found, but quality tailoring is worth it. I had a pretty bad experience with having my wedding dress altered, and would have gladly paid more to avoid the hassles!