I love my big cutting mat. I wore mine out and pulled out the smaller one to get me through till I could get a new one at a good price. So I got one at the Jo Anns sale. Once you get used to a big cutting surface you will not want to work on anything smaller.
FYI - My old mat , still had some useful areas on the sides., so I cut that area off and made a few 6X8 inch mats for cutting and trimming really small stuff , so I do not wear out the middle quite so fast on my new mat.