There are 3 LGS's that I regularily patronise. The first is a good store for all sorts of stuff-tyres, fenders, parts, etc, but specialises too much in ATB and cruiser bikes.
The best one is my local 'roadie' shop. Prices are a bit high, but these guys know what they are doing.
The third is the local 'bike boutique', and these guys don't know squat. A friend of mine has a Trek 820 MTB, and somebody stole his saddle and seatpost. He went to this shop, and they sold him a 26.8 post for his 27.2 seat tube. I let him know that was why his seat is always slipping. They are a Trek dealer, too!
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