Joined: Jan 2008
Posts: 23,645
Likes: 1,109
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
From an aesthetics standpoint, I have standardized on either the 6400 (tricolor) or 7400 (Dura Ace) eight speed STI. The Dura Ace requires a DA 7400 RD, which is a bit of a PITA. Aesthetically, the 105 or lower 8 speed units are fuggly.
The older 8 speed STI are repairable (other than SORA), big advantage to someone with a box full of broken 9 speed STI.
Most of my 6400 and 7400 parts have come in the form of a complete bike (donor).
From a $$ standpoint, the new Claris units would be my choice.
Realize on the older units, hoods are out of production.
If you are VERY patient, I have seen both the 6400 and 7400 series STI on eBay at reasonable prices. The variance on eBay prices can drive you nuts.
Last edited by wrk101; 12-06-14 at 09:04 AM.