I think I have 2 pairs of Saxx Everyday Trunk, looked it up and I had bought in 2008, so they are old, but the elastic failed within 4 years from what I recall. Band didn't stretch, just elastic hardened. That's actually not too bad. Though my biggest issue was the lack of support on the bottom. If it had that it'd be worth the price.
I've really been enjoying Joe Fresh's blue sport boxers that I bought on clearance for $3. I bought a few thinking I had little to lose, but they were so comfy I went back and bought all of their clearance stock.