Okay then, I want to take the middle of the roads and say that I think Sophomores are the best investment...
a) They've experienced college life for a year, have had a chance to see what Greek Life is about, and will better appriciate the bonds of sisterhood/brotherhood
b) Because they've been in college for a while, they have most of the crazy "I'm away from my parents, let's go nuts" mentality out of their system and are not as likely to do a complete 180 and turn into a psycho pledge (you know we've all seen this happen)
c) They're still a good financial investment because they have at least 3 years, maybe more depending on their major
d) I've found that freshman are more likely to drop out than Sophmores
that's my two cents