Which one should I get the futaba 3pk, DX3R or the M11

They all have a lot of good features - go to a lhs where you can hold them all and see which one you like the feel of the best.

+1 They are all great radios with both pros and cons. Just get the one you like best.

You may want to hold a KO Propo Helios as well as they are also a nice radio.

Helios (moderate cost) or 4pk (expensive). Both can come with 2.4 DSM.

+1

all are really great radios i like the 3pk the best but that my opinion

I like 3PK but sold it, with 4PK in the market I like it more.

As for Sanwa M11 series I used b4 having it sold, they are more heavy & bulky. Yet still as of now the manufacturer does not change the design. The design looked old fasion.

Yes, I did hands on with DX3R it's the lightest & cheapest among these radio.

Most importantly it's your personal preferences which matters.