Service:
I've been going to Infinity on Camelback (IoC) for years now.
They work with me on pricing, don't recommend unneeded service, nice, and the facilities are nice. I even get a loaner car while mine is being worked on.
What more can you ask for? Prices seem reasonable compared to other Infinity dealerships.
On various occasions I've annoyed them with random questions VIA phone. They're always very helpful. In return, I always speak highly of them and give them my business.
Also, I've recently have been taking my wife's car in Camelback Hyundai (think same owners). Hopefully they can be like IoC.
Sales:
They seem friendly and helpful. Obviously they'll work hard to get your business like any salesperson. I did not feel pushed into purchasing however.