Well, you're posting on the U of T subreddit, so I think the responses you get might be biased. I went to Queen's for my undergrad, and while I did not study commerce, a huge number of my friends did. I think in terms of reputation, both schools are very similar and your opportunities within either program / your prospects afterwards will also be very similar. In terms of what each program offers course-wise, conference-wise, and exchange-wise, I'm sure you can find everything you need to know on their respective websites. The best thing you can do is go to any open houses that either school is putting together (if you are able to get there), and ask the admissions office if you can speak with any current/former students via email in order to get a better, more first-hand perspective. Broadly, I know that the sense of community at Queen's, and especially in commerce, is very, very strong. You will know every single person in your year and the commerce society at Queen's is incredibly active in organizing events. There also seemed to be a self-cultivated air of prestige amongst commerce students that you didn't really see in any other program (like everyone was very proud to be a part of Queen's commerce, and this 'air' was very noticeable on campus, sometimes to the chagrin of non-commerce students). If that's something that you think might motivate you in your studies / extracurricular activities, then it'd be a good program for you.

I don't really know about what commerce (or undergrad in general) is really like at U of T, but I think at Queen's you will feel more like a valued and integral part of a strong community of students. At U of T you will obviously be in Toronto and have everything it has to offer right at your doorstep.

Don't worry so much about which one is 'better'; as I said they're both very similar and any such rating of an undergraduate program will be highly subjective anyway. I very seriously doubt that choosing to attend one over the other will have any noticeable on your future career prospects if that's what you're thinking about. What matters most is what you want to get out of it and where you most feel comfortable, and you can only figure this out by visiting the schools, going to both programs' open houses/recruitments events, and speaking with current/former students. I believe if you youtube 'Queen's commerce' there's a girl who vlogs about her experiences in the program.

Sorry for the novel, and good luck!