Originally Posted by
cat0020
Whatever floats your boat.
You'll find out for yourself soon enough once you get on a steep grade.
The thing is that I already have. Over the many years I've ridden ISO305 wheel bikes in steep terrains, touring, overseas and at home. Your concerns about the Zee RD and about low gearing on 305 wheels have no merit and have both been debunked in real practice. You are out to lunch.