I hate to be critical of a free service, but I don't really understand the comments in the broker ratings section. Why would one RT broker have any better quotes or connections or executions than another? Don't they all come from the same source? Ok, I know some brokers use SP Comstock for quotes and others PC Quote, but the brokers themselves don't have anything to do with how fast or slow the service is. am I wrong about this? The selection of one RT broker over another should turn on fees, policies, clearing and customer service . Fees and policies are pretty easy to understand. Customer service probably is not much of an issue for experienced traders. Clearance seems to me to be important. This is an area where you can't tolerate errors, and financial stability is important, even if they all claim to have insurance. I know at one time people hated Soutwest Securities. Are they ok now? How about Instinet? Penson seems reliable but their reporting is hard to follow for me. I am looking at JPR Capital. Their rates are rock bottom and they seem to know what they're doing. They clear through Southwest. Anyone have any experience?