I love my Filson single tin chaps. The double tin are a little nicer, but the single work for me and my budget. I spent about $60.00 on my set and they have a lifetime warrenty. Some hardware/saw shops carry them.
Just don't do what I did for the vest. I have a $15.00 GI Joes Sport Store special that MAY last two seasons. I spent my money on a new fly fishing vest instead. That and extra shells because I have pretty bad aim and need a lot of practice.