Hmm, sell 35L and 24-70L to get the new 24-70II?

I use my 35L a lot too. For one thing, it is my favorite lens for panorama shots using a tripod and a pano head.

In my case, I rented a 24-70 mk I and a Tamron 24-70 at the same time to see how they compare to my 24-105.

I think I'm going to buy the Tamron 24-70 for my constant f/2.8 option. Optically it is equal to the mk I. I can't stomach paying $2300 for a mk II that doesn't have IS. I know how shaky I can get at the end of a long day of shooting and the Tamron is lighter, smaller, and has image stabilization. I haven't heard of AF issues with Tamron and it works well enough with my 5D3.