I quit using Chrome when I got my MBP because it was always showing up in the battery meter as a battery hog. I believe they have since fixed that (apparently according to updates). I still use Safari though as it's what I'm used to now, and have it setup the way I like it. I also use the Reading List feature a bunch (though on Chrome at work since there is no Safari I use Pocket with an IFTTT recipe to add them)
I've had pinwheel on occasion but not very often, and not enough to make me want to stop using Safari.
Safari is great for casual browsing, once you start trying to do any real work in Safari though, it's useless. So far I'm having much better luck with Chrome, which also has a Reading List.