I'm a prop. trader at one of the firms you have mentioned. In my opinion all 3 firms are great places for starting traders, and they all have great traders. Best to my knowledge FNYS and ETG were recently hiring, and Schonfeld was not.
All this and lots of other info is available on elitetrader, pros and cons of trading with them have been discussed inside out several times, all you need to do is "search" from top right corner of ET start page.
Your first 2 posts, regarding commissions and bullet rates, are contradicting to the statement that you are interested in Schonfeld and ETG just to be with better traders.