We've always had great selection & service (for years now) with Alpine Sports: http://alpinesportsrental.com
We started using them because they are in the City Market shopping center where we go for groceries and beverages, and that has always been convenient to where we've stayed. Once we started with them we never found any reason to complicate matters.
Family and friends have used them for winter ski and summer bike rentals, ski and boot services, binding testing, and purchasing various bits of equipment, including demo skis. No complaints from anyone. Friendly and good turn around for tuning and repair when necessary. Prices seem competitive.
I have wandered Christy's while waiting for a table or just wandering and they have been informative and helpful but never bought much from them. It was in a Christy's (the one on S. Main St. IIRC) that a gentleman "sold" me on Oakley Prizm Rose lenses even though they weren't released yet. He'd tried them at some convention somewhere, pre-release, and found them incredible for flat light. They were finally released and I ordered the lenses from Oakley for my Splice goggles and they are everything I hoped for.
There is a lot of competition out there and they all seem to fully understand that they make their money from skiers so I would be surprised if you didn't find quality service and competitive pricing most anywhere you decide to rent from. I've never so much as bought groceries or beer out there w/o a hello and a smile.
Edited by Knucklehead - 1/28/16 at 10:31am