Acrylic Tanks

[Tigger]

I was wondering if you think an acrylic tank would be good for a reef. I heard they are better insulators than glass, but they scratch really easy. How easy are we talking? Does cleaning the algea off the sides become a problem with an acrylic tank? Does anybody here have an acrylic tank? Is it easy to take the scratches out? What are the pros and cons?

Thanks in advance for your info.

Steve