Andover and Heartland are very similar in many respects... ie, software, environment, etc. In fact, Anover's Edison, NJ office is comprised largely of ex-Heartland employees/customers as is Andover's Hoboken office (in fact, they are in the same building.... 5 floors apart). The most recent benefits of Andover seem to system reliablility and overall payout for reps/prop traders. Andover's customer deals tend to be more beneficial to the trader as well. The downside to Andover tends to be it's super-decentralized organization and their remote platform is not as reliable. Also, there's been a lot of investigation into Andover in the past year or so including the shutting down of certain offices for violations of the short sale rule. Also, if you want to become a proprietary trader as opposed to a customer right off the bat, Heartland provides a much more secure, better deal for guys starting out with much more in the way of downside protection. While it comes at the price of payout percentage, in the current market climate, the difference is nearly negligible. It's really a matter of personal preference I think. Contact both firms and find out what they are willing to offer you. Mention also when you call that you are looking into going with the other firm as the two firms REALLY dislike one another..... I know personally that the owner of Andover cannot stand the owner of Heartland. As a result, it might benefit you to play one against the other in shopping for a provider/employer.