I have a nice size collection of automotive, electrical, electronic, and woodworking tools but just recently decided that many of the bicycle specific tools that I need are better bought than homemade. The repair stand, chain whips, cotter press and a few other tools that I made myself are plenty good enough, the RD hanger alignment rig that I used is more trouble than it is worth so I bought the Park DAG-2 for next time. Since I started buying Park tools I seem to just keep on buying them. I have been ordering mine from Amazon mainly because of the free shipping with Amazon Prime. So far I have been impressed with the quality of Park tools and using the right tool for the job just makes it more enjoyable.