Upon both Mass Effect's numerous times alot of questions started coming to me. For example. Who's nicer Kaidan vs. Anderson. Or the opposite who's meaner Ashley vs. Jack. Here are some more.
more stealth Kasumi v. Thane
more experience Samara v. Wrex
most hated Udina v. Turian coucil member
most changed Garrus v. Liara (between 1st and 2nd games)
smartest Mordin v. Legion
better DLC shadow broker v arrival
This list could go on forever but theirs just a few I had in mind. So if you have any other feel free to post them. These are just opinions not a debate so try to argue over it.