Joined: Jan 2008
Posts: 23,639
Likes: 1,106
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
I've done both. I put an 8 speed wheel and ran 8 speed 105 on a Cannondale that was originally 7 speed, and I ran a 7 speed system with 8 speed brifters, just stopped out the highest gear. Found it much better to stop out the highest gear, than to stop out the lowest gear (biggest rear cog). Shifter liked that a lot better.