I found these very cheap puzzle mats at Sam's club for much cheaper than your general taekwondo etc. mats. Now, I'm 16 and I train muay thai, bjj, boxing, and wrestling, the money factor is incredible for me. Can anyone give me a reason that these are not as good as any others other than wear and tear? http://www.samsclub.com/shopping/na...Shelf|792076|Util-A-Mat+Reversible+Mat+-+8+pk.