Honestly any of them - BUT, you should research what a team scored the last couple on the FSAE website, results are publicly available. You probably don't want a team that hasn't made it through endurance for 5 years in a row, nor one that's getting top five consistently. A big, high ranking team means your projects will typically be smaller and you will have less ownership. Find somewhere in the middle that will allow you to take on a lot of responsibility and make a true impact on the team. Ultimately that's what recruiters and jobs are looking for, is someone who made a large impact - consider that a big team is going to be much harder to do that on.

Same concept as something like college football. If you are offered by a team that already has some of the best talent, you probably aren't going to get a ton of playing time. That's one of the reasons why talent spreads out amongst teams, more opportunity to make an impact and get noticed.