I agreed with platgof the program boxes are nightmares. if you are using a sanwa radio than I would recommend the esc cause when bound properly telemetry is great but being able to program different values right from the remote to car without leaving the drivers stand is awesome. the speedo are very smooth and tons of adjustments there to play with to suit your driving habits.
the esc with built in receiver I'm not a huge fan just feel I could never get a strong brake from it as I could with regular gen2's.
programming the esc is a little tricky without the box but once you do it a few times its pretty easy to do but I wish they would do something to make using the program box more user friendly.
I run all sanwa electronics including servo's with is programmed thru my m12 remote too.
I started with hobbywing xr10 esc which is very user friend and very comparable to my higher priced sanwa and with both esc perimeters set the same I might have a tough time telling the difference