Originally Posted by BlackKat
Actually I find the opposite. I was running stock with my mod car one day (dual diffs) and I thought it was pushing a little bit but felt pretty good, but I set a PR (as well as TQ/Win) with that car and when I got off the stand each time everyone commented on how much corner speed my car carried.
I found that all my cars & setups seem to work better with a diff than a one-way. Just seems to suit my style better. I can't use the pull out of the corner the one-way provides (which isn't really all that usefull unless you get out of the corner just right) because I'm trying to correct the car and get it out of the turn in the first place...
Alot depends on the track, A fast and smooth flowing track will favour cars with one-ways and tight/technical tracks are better for spools.
Then there is also each and every driver's racing style, some perfer to drive a tight optimum racing line and others prefer a point to point cut and thrust style.
Berger is right, a dual diff car is easiest to drive and like Josh said, you can dial in a little throttle at neutral to keep it flowing but you won't have the off power steering like a one-way.
I started this hobby with 1/8 On road cars in the early 90 and now more than 12 years later, all 1/8 car are still one way equiped. With one-ways, you have to hold throttle to keep your racing line and brakes is seldom/never used except in emergency whereas with a diff/spool, braking is a major step in order to be fast (think heel & toe method)
There is no right or wrong, faster or slower with all the above styles, the answer really depends on whether you talking F1 racing or WRC racing