no real disadvantage other than receiever cost. I might stick to the rx744 for it at $89. or the mx sport if you really dont care about the speed.
its pretty feature rich but all the actually used functions are layed out in the menu quite nice. the layout of the dials and buttons is nice. the lever is in the better place than my m12 actually. one of the dials and trims were in conflict without the dropdown attachment, but never had that problem with the mt4.
with a 2s lipo is stupid light. like toy rc light. the lipo will last a MONTH between charges.
telemetry is kinda.. useless on this radio. the temp sensor can be made to work but the rpm is a complete waste. its too slow and so many things can mess up its reading.
so unless somone could provide a chart comparing speeds between receivers, i wouldnt bother with the rx461/2 unless you wanna use lipos with servos in a nitro car.
you could use rx 471 but i doubt the mt4 will realize the speed advantage.
you could compare this radio to the 4PL which is also a fantastic radio.
one thing id consider now is if the 4pl was backlit or not. This isn't and its not a BIG deal, but some indoor facilities have terrible lighting and the screen can be hard to read with the sun beating down on it.
you can add one aftermarket, but its definitely a nice feature to have.
Sanwa M12 - Xray T4/16 - Xray Nt1/16 - CRC XTI-WC - ProAMPS - Hobbywing - ReVTECH - ORCA
www.irocc.ca - www.wcics.ca - www.vrcworld.com