I considered the back yard buddy but was not happy with it, and price wasn't the reason. I don't like the way they do their locking system, and I'm not happy with their safety features.
I ended up going with a lift from Gregsmithequipment.com and picked it up myself in Wilmington, DE. It was cheaper, and is actually safer than most out there.
Do yourself a favor and just research, read, and look at ones yourself. You're talking about your safety and investment (price of lift plus both cars involved), so don't rush into this.
Here's some reading as just reference of what to look into and familiarize yourself.
http://www.gregsmithequipment.com/Articles.asp?ID=270