Check out Branford's page for more info on the cassette issue:
linkee
If you want to go Ergo: 8s speed brifters can be had on eBay for ~$100 or less in good shape. Any front derailleur will work, and will work w/9or10, too.($10) The rear derailleur at a reasonable price is tougher to come by. You'll need a pre'01 8or9 speed. I bid <$50 for quite a while on eBay on every rear Chorus and Record in good shape before I got one. If you have any locals that will sell you stuff cheaper that's a better way. I couldn't find any stuff around here. 8s speed cassettes are reasonable. I think I paid $25 for a NOS Record set.
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Last edited by Ex Pres; 03-02-09 at 07:25 PM.