Just remember that MF global were essentially gambling with...

Just remember that MF global were essentially gambling with clients funds( illegally), instead of hedging trades. I doubt any brokers carry that kind of risk anymore. A true DMA provider only makes money from Comms, so all you're essentially doing is taking a short term margin loan. For them to go belly up It would take some kind of black swan event that their risk models haven't allowed for, where markets basically fall apart and clients with big expose are left naked with open positions they can't afford to cover... I'm sure if you really nagged them they could tell you the probability of such an event happening.

There's still no way i'd give any money to some of these small start up company's, like others on here have suggested. IG or IB seem to be the safest bets.