Right now im running 35's on a 4.10 diff, only until i can set up my rear 5.29..
The 4.10's blow compared to the 5.29's in my opinion.
Even with the 4.10's i can still pull most of the hills around here in 4th gear, some in 5th. Just with 5.29's i had more power pulling those hills in the higher gears.
The only thing i will say i do like about the 4.10's is cursing on the highway, the rpms are in a much better range than with the 5.29's.