Hi Bill; It's been about 30 years since I've had sushi in Chicago, so I'll leave those recommendations to others, but - Flat & Sharpe Music (6749 N. Sheridan Rd.) and Make'n Music (1455 W. Hubbard St.) were both exceptional last time I was in them, and, while it's been a little while, I haven't heard anything to make me think otherwise. Different Strummer, at the Old Town School of Folk Music (I believe they're at both OTSFM sites - 4544 N. Lincoln Ave. & 909 W. Armitage Ave.) should be worht a visit. Andy's (2300 W. Belmont Ave.) is fun - a guitar selection that I can only describe as eccenctric (Italia eletric 12-string in MOP, a fair number of Trussarts, a clown-fish guitar) and has just about every other instrument you can name - theramin, digiridoo, cajones, harps both stringed & mouth - the list goes on and on. Plus their guitar dude, Mick Scott, is a great guy & a tremendous picker (and an old & dear friend - if you stop in, mention that I pointed you at him).
Peter