I use Ebay for 90% of everthing I buy. Unless I cant wait for shipment, thats when I go retail. Here are a few I have bought. Its up to you...mostly depends or your needs.
Solid One Piece,single fold down middle "classic" style
eBay: WRESTLING, GYMNASTICS, MARTIAL ART MAT 10' x10' x1 3/8" (item 220024842743 end time Sep-13-06 06:40:50 PDT)
eBay: MIXED MARTIAL ART MAT 10X10 CAGE FIGHTING MMA NHB UFC (item 120026457298 end time Sep-29-06 16:06:35 PDT)
I like the puzzle a little better simple because I have limited space at my house and need to store this more then take it out