Well....LA is a big town. If you're dealing with Helen's Cycles, you must be on the West side. I've only had experience with a couple bike shops in the San Fernando Valley. I'll throw in my recommendation for Valley Bicycles. http://valleybicycles.com/site/intro.cfm They were very nice to me regarding some repairs and new pedals. They deal in Treks and Lemonds. I don't remember seing Specialized or Cannondales in the shop though.
Hey let me know what bike you finally decide upon. I'm a hair above 5 feet tall on a good day. I currently ride a 47 cm Trek 2000 WSD. It's aways good to know what works for others just as short as me. Any reason you ruled out Treks?
-Shimpie



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