I use the
HobbyKing version of the Deans "T" style connectors and have found them to be more than capable of carrying the 30~35 amps that the MP4 draws:
On my modified MPII, my wattmeter regularly records a maximum current ~50 Amps and the connectors have been in use for over 5 years so far.
This is the maximum measured current that I have inflicted upon them, which they handled without a problem :
Although I have discovered that they are not able to withstand an accidental direct short while trying to connect to an unprotected high current LiPo pack:
My 30c 10Ah LiPo pack was capable of delivering 200 Amps continually and 300 Amps for short bursts, so I was not surprised to discover that the connector was unable to survive a direct short circuit with such a high current.
Alan