Originally Posted by
123123user
Are there any essential difference between these higher geared cassettes when you are riding on road? One I can think is that it allows more pedaling speed but only when there's no traffic... I don't think people could use 1-7,8,9,10, 11 and so on in a single ride effectively. I've been eyeing on a bike to use for roads with a Shimano Tourney TZ Derailleur in 7 speeds... but my friend has 9, so would there be any significant comparison of performance?
You obviously don't live in a hilly area or drive a loaded bike. On my (not really hilly) commute I'll use 4-5 of the 9 cassette cogs I have. If I'm carrying a lot or towing something, I'll use more. If I head to other (more hilly) places in town I'll use more.
If you're building up a commuter and want to do it on a budget, go with the 7 or 8 speed. I'd imagine they're relatively the same price now-a-day. (Anything at or above 9 speed is more expensive.)