I've got some of both, but I preferr the 14" barrels because I mostly use my Contender while sitting in a stand, regardless of which barrel length. I usually carry a rifle or shotgun if I'm gonna be on the move.
Here's what you can do if you really like the 14" 35 Remington and are concerned about the chance that an offhand shot might present itself. Run down to the local sporting goods store and purchase yourself a 10lb dumbell, practice holding it straight out as if it were a pistol. Do this repeatedly, after a while the Contender will feel like a cap pistol! That's basically what I did to help me to get steady with my 14" Contenders.
I agree with what everyone has said here, the straight walled cases like the 44mag, 357Max, etc tend to work better in a 10" barrel than some of the bottle necked cartridges, with the exception of a few wildcats that were originally designed around a 10" barrel. For example: 7mm TCU, 357 Herrett, 30 Herrett, but those will involve handloading your own ammo.