Rebuilt / Rebuilding Injectors

I have a miss at startup on my 2012 XC60 3.2L; about 170k miles.  Smooths out after a minute or two. 

Have replaced the plugs and the O2 sensors.  Seems the usual suspects would be coils or injectors.  The bad coils I've seen don't get better - of course I may be wrong.

Assuming bad injectors, I could get rebuilt or send mine in.  Haven't been able to find a rebuilder behind the Redwood Curtain, so I would have to go further afield.  Anyone the tribe trusts?

The other option is rebuilt / exchange.  I found a set of 6 from GB Remanufacturing for about $250 with $150 core charge.  Fleabay has a set for $180 sold by Injector Planet - no exchange. I know nothing about either one.

Any thoughts or suggestions?

Rc engineering and I believe they are or have been a Grm sponsor

I have also used Marren before with good results

I've used both Marren and RC with good results. RC was a little easier to work with, both turned the injectors around quite speedily.