Hi M.,
I went through the same dilemma when putting the upgrades in our brand new townhouse five years ago. Based on my experience, I think there are two thinks you should ponder when going for granite, Corian or any other counter top material. First, maintenance. And second, cost. Granite is a beautiful material and this is the only pro I see in it. The cons are: it is expensive, it react to acid food like tomatoes and citric food, and you have to seal it every certain time. Therefore, I' did not go for it. Corian is a Dupont product that resists high temperatures. For instance, is you put a hot pot on it for a some time, it will not leave a burning mark. Likewise, it will not stain with acid or citric food. Unlike granite. It is easy to maintain, and you do not have to seal it. On the other hand, I'd consider to go for formica. I went for one that is an upgrade of it. It is not as pretty as granite and maybe resistant as Corian, but it looks great when you have other things in the kitchen that enhance the appearance of the whole picture. I did ponder my expenses and invest in a great coffee machine and other appliances, instead. Do not regret having done it so. Everyone who has been in my house loves the counter top because it matches the dark cherry cabinets and contrast with the stainless steal appliances.It does not even look like formica. So, I hope my advice works for your decision.