I have always liked Pinetree, due to the fact that they have those small packets for great prices, and most larger packets have far too many seeds for most of us to use before they aren't viable any longer. Some of the catalogs are getting way overpriced, and that's before I even look at some of the ridiculous shipping charges for just a few seed packets! But then, I just toss those into recycling!
So far, I've gotten at least a dozen seed catalogs, but only kept 3 (I think?).