"Home Easy" devices What language is best?

Good morning,

I use many devices “home Easy” that support several different languages, but have a problem of inteferencies, I will change all devices at the same language, which can not choose or that will be better …

When I register a device, vera creates 3 or 4 devices to the same device, and I choose one and remove the others …

RFXtrx the self-created as:
“X10ChaconRemote” “RC / L2.0 / xxx”
“BinaryLight” “LS / L2.0 / xxx”
“BinaryLight” “LS / L1.1 / xxx”
“BinaryLight” “LS / L2.1 / xxx”

In your opinion, what or which of them would give me less interference problems?

thanks

i use AC for mine and disable the others

AC is L2.0