I didn't want to hijack a thread...

Has anyone tried one of the 'Mityvac' (brake bleeding system) products?

I was planning on getting one to hook up to my DeWalt air compressor. I have a set of Goodridge SS brake lines sitting here and want to install them. I typically work by myself, so to spend $50-$100 is worth it if it makes things easier on me. (Plus, I like tools).