elm327 1.5 version or 2.1

[HSHS]

Hi
I have a doubt
So I'm asking, what is the best version of the ELM327?
Thanks

[cail]

Hi,
In common - this does not matter. If speaking about ELM clones, the version numeration in there is absolute mess and reflects nothing.
For original ELM - even old chips are handling great.

[HSHS]

Thanks