I can also chime in. 8 spd is smooth as silk. I also drove the 2014 Sierra 1500 3 weeks ago (same day as I test drove my Ram). It's a dog off the line. Very noticeable lag (almost like an old turbo) before the engine transfers power....seemed like a full 1 second from when I pressed the accelerator till the truck started moving. Then it seems like it lurched forward too much. Either way, it was no where near as fast as the 8 speed hemi with the 3.92's. Not even close.