Should I service at Infiniti instead of Nissan dealership if...

[DeLRo]

Ok, so I just took over payments on a 2010 370z. Just hit 11k miles and I'm due for oil change and want to plan ahead for my 15k service.

I live in the SF bayarea and the local Nissan dealer in Fremont closed where I new of a few good people there. Now searching around I find that all the other Nissan dealers don't have the best reviews causing me to be wary of bringing my new ride in for anything.

However Infiniti of Pleasanton is close by and they have amazing reviews as well as the 2010 Award of Excellence. I know they can't do warranty repairs there. But could anyone tell me if they share records with Nissan? Just in case in the future I went there instead.

Also does anyone know approx how much more expensive it might be or if it's even worth it?

I could do all the basic services myself if I had the time or space to do it in. But since I do not I would like to ensure I find a place that not only knows their stuff. But also treats their customers well.