I've noticed that the handles are "more responsive" after 6.0, but in a very particular way: under 5.x, I had to wait until the handles were fully extended before I could pull on them. If I pulled before they had finished extending, they wouldn't register the tug. I'd have to release them, then wait for them to pull in slightly, then tug on them. Since 6.0, I can grab the handle before they're done extending, and the doors unlatch as soon as I pull them to full extension.
This detail in 5.x caught me so often that it was the first thing I noticed in 6.0 -- if I'm impatient, the doors still open!