Metatrader 5 (MT5) and Depth of Market (DOM)

 
Hi,

With the insolvency of Alpari announced and their servers down, I'm looking for another broker with MT5 Demo Accounts who populates the Depth of Market with real data. The more DOM levels, the better.

I'm doing some research and this is critical for me, so any recommends much appreciated.

Also, while I'm at it, any idea why so few brokers are supporting MT5? 

Best regards,
Merlin