I've noticed that there are 2 types of prop firms. Type A: One where you have to get a series 7 and it seems like the firm is a broker dealer. Type B: The other type is where a group of people get together and trade under a retail account and you don't need a series 7. I always hear that you should go with the big guys like bright, assent, or echo. However I notice that if you join assent you joint tradestar? Is tradestar safe? Advice?