Commercial source of competent lambda-pir E.coli?

[SerAln]

We routinely use CC118 and S17-1 with pir gene inserted by a lysogen, but I've 
never heard about commercial sources for this kind of strains.

C Coward wrote:

> We're trying to find a commercial souce of high-efficiency (electro- or
> chemically-) competent E.coli that contain the lambda-pir gene (we need
> this for replication of our vector). Can anyone suggest a strain & source
> please?
> 
> Thanks in advance.
> 
> Chris
>