I'd love to give you my very professional and opinionated thoughts on the matter. I've run my own AdWords campaigns for years and have been thru just about every possible "solution" from every company out there - DDC, YP, Web.com, Reach Local, Gannett, etc. I've used the small-ish, boutique style shops and the Big Box shops. With that lengthy preface I can say I am a very strong and fervent advocate of Showroom Logic. I believe they are HQ'd in Miami but have reps all over the place. We are coming up on our Anniversary w/ them Jan 1, 2016 and can't say I've had a single moment of concern or doubt. I fire all kinds of silly and inane questions - bordering on cosmically stupid - to my sales rep and account manager at all times of day and days of the week. Each email is answered in a timely manner w/ actual "thought" to the question and the answer provided.
Showroom Logic. It really is that simple. They offer a full lineup of options from simple Google AdWords / Bing campaigns as well as some very high-quality advertising options, opinions and "solutions". Their most recent addition of ZipDriven is powerful and will continue, in my opinion, to grow into a must-have tool.
I work at a dealer. We have two stores and have been family owned since inception. Both our stores use SRL. Again, I used to run my own campaigns with great success but the ability to pay a company to run it frees me up for other tasks.
Oh, and our budget isn't the biggest in their client pool and they still treat me, my companies and my GMs like we are their biggest client. Seriously.
Feel free to find me if you want more details.
If you need to speak with our rep, his name is Matthew Shelton. I'll gladly provide his contact info via PM, text or email. I'd hate to post here and it end up getting him attacked by robots. 
-_- D.
Dayn Riegel
Loganville Ford / Carey Paul Honda