If you do have difficult areas to get at which have light rust or just want to prepare the metal before priming/stone chipping etc try "Metal Ready"
http://www.frost.co.uk/item_Detail.asp?productID=8229&frostProductName=Metal%20Ready%20(20oz,%20590ml)Comes with a pump dispenser and stops the bare metal from going rusty again as your restoration progresses.
Works really well after sand blasting - may be beyond the average home workshop.
Use sparingly as it drips everywhere.
I just don't like aggressive acid rust removers - they are very difficult to remove out of the "pores" of the metal i have found and caused (for me anyway) new rust under the paint on a few previous restorations a few years later.
Anyway its a personal choice, if you get on well with Genolite type of removers then good luck to you.