Anybody use this valve spring compressor?

Looks like a good one, I just bought this one today from the local auto shop. I paid $45

[ame="http://www.amazon.com/KD-2078-Universal-Overhead-Compressor/dp/B0002STSGC"]Amazon.com: KD Tools 2078 Universal Overhead Valve Spring Compressor: Automotive[/ame]