Floor mats

[DanH]

So I am standing in front of the mill (on concrete) and realize that I need to buy a mat to ease my aching joints. Of course, I come here to get some experienced opinions on which mats work best and what size do you recommend. I found a likely mat at Costco in both 2' x 3' and 3' x 5' sizes and think the 2'x3' might be the one to get but there is a local company in my area that makes the same mat to any size you want at basically the same cost per foot. What do you guys think? Here's the link to costco.

http://www.costco.com/Browse/Product.asp...opnav=&s=1