your biggest thing you failed to mention is what you prefer to do...walk...or ride. if you like to walk your choice is obvious. if you're the type to always ride a cart, obviously the cart bag. if you're hopefully going to do both...i'd suggest stand. last thing you wanna do is be carrying around a cart bag for 18 holes.
I have both, i have my staff bag b/c if i'm riding or on travel, i can put so much shiesse in that thing it's ridiculous. i have my stand bag b/c i love to get in 9 holes after work almost religiously 3-4 times a week...weekends i use the staff since i'm usually riding a cart with my pops or my fiancee.