I had a Fiskar's mat from Walmart but one day I put a towel on to iron my fabric and well I worped it so bad. :( I have not been able to get a new one for almost a year. So no cutting since then.
I finally ordered a new mat yesterday an Omnigrid which is the same brand as my rullers. I hope I have good results with it, no more ironing on my mats though I now use the ironing board.