I'm glad this thread came up again as I've been meaning to post our (we think) good experience this year. We have 8 large pines that we wanted cleaned up and advice on our new property as to the rest. I knew I wanted an arborist for our first go around because if someone topped our pines I wouldn't have been responsible for myself and Toolman would've been a single parent while I cooled my heels for 20 to life.

Seriously, one thing that just makes me livid is topped trees - if you don't want a 60ft tree, don't plant one!!! Anyway, we got them as a recommendation from the neighbors and wound up going with them.
We used TipTop Arborists. It's a family business, you can find out about them at their website (as well as instruction on tree pruning,
and how to select an arborist):
Tip Top Arborists
http://www.tiptoparborists.com/index.htmlJim Lewandowski is the owner and came out himself for a free estimate. (I called another arborist and they wanted something well over $100 (I can't find the email) PLUS travel time/expense PER HOUR). Jim worked up an estimate that seemed probably inline with an arborist service after a few back and forth emails we decided what to do, he was not short with his time for a 'homeowner' account. He was also not pushy about work 'he thought we should do' like some people are, he said he would be happy to do whatever we wanted done. The single thing he did feel strongly about (and so I gave it extra weight) was that the several small cypress trees that we had did not belong in WW and that they and their borers would only be trouble whether we wanted him to take them out or not, up to us. Since most all of them had been topped for some reason or other before our time, we did wind up cutting down some ourselves and had them do a couple (cheap) plus stump grind the whole works.
The estimate is all-inclusive, no hidden fees, and did not change upon completion of work. We liked the crew fine. There was one guy in the cherry picker and three on the ground, took two days for all of our trees, plus we had them take out two juniper hedges (plus stump grind). The crew was very nice, very helpful and professional, and I must say, left the grounds cleaner than when they came, including blowing off the roof.
Good luck whomever you decide!