Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Wow!

I have used many different brands and types of paper for printing photos, but I have been completely won over by this paper. I have had so many compliments on the "photo lab" look, and many people turn the photos over to see where they were processed! While it is expensive paper (which is why I gave 4 stars rather than 5), it is the only one I'll use to print my keeper photos. I have friends who say they have switched to using this, too.