While I'm obviously not as knowledgeable as someone like 10xLeverage, I figured I might try to help out prospective bankers by making a thread like this. I received a lot of PMs over the last couple of days and thought it might be beneficial for people to just get that information out into public. I still have a good deal of free time for at least another week, so hopefully this whole thing is helpful.
My information really comes from the following: I interned at a lower BB my sophomore year, went to GS my junior year summer into a great industry group, then decided to leave banking behind. I also learned a lot while interviewing with other banks: I got offers from MS and Lazard as well and went through the process at a couple of other shops (Greenhill, BX M&A). I admittingly don't know that much about Citi, CS, UBS, and DB. Beyond that, I got one MBB FT offer, but this is a finance forum, so that probably isn't too relevant.
Furthermore, I was actually recognized by my career services folk as a distinguished mentor - I took a few kids under my wing who were trying to pulling in SA offers. They did pretty well: 1 to GS, 2 to JPM, 1 to MS (not NY), 1 to MoCo, 1 to PWP, and 1 to McK (this was actually for FT, he was @ one of the aforementioned for his summer). Working with them during their processes and also after/during their summers gave me some insight at these places.
Lastly, I lived with two kids in large cap, super desirable buyout shops during my summers. They were pretty awesome, I learned a lot about the finance industry from them and got some good exposure to their circles as well. They helped mold a lot of my perceptions about the industry.
I actually thought about starting a website that did some sort of mentoring thing (still might) but it's not recruiting season. I figure I can answer general-ish questions on this forum instead. If I don't know the answer to a question or don't think I have the requisite knowledge to give my opinion, I'll just say so.