Difference between a 13" and a 14"

I am contemplating ordering a mirror for a dobsonian project, and am looking at mirrors in this size.

It seems there is a considerable jump in price between a 13" and 14" mirror.

I have looked through many 14" mirrors, and think I would be happy with that size, but given the price difference I would like to order a 13" mirror if there is not much difference.

Is there a big difference between these apertures? Will I end up wishing I had sprung for a 14"?

-Jake

The visual difference between a 13" and a 14" is not going to be very obvious. Just make sure you are getting a good mirror, support it well, and make a scope that will cool well. Actually, a 13" mirror will cool somewhat faster than a 14", and you will get away with a somewhat lighter scope.

Where are you looking at mirrors?