This site has by far the best deals on Reds tickets I have found. I just picked up 3 tickets behind the opposing dugout (3rd row) for $25 each. They retail for almost 90 bucks each.
Basically you pick a game, and based on projected attendance (I'm guessing), they let you know how good of a deal you can get, and then you name your own price. You can keep lowering your offer as long as the site finds tickets at the price you enter.
I started off at $40, and got it down to $25.
I don't work for this site or anything, just thought some Redzoners might want to save some money this summer.
Also, the trick to finding the best deal is to keep searching games until you find a ridiculously good deal. I was going to get tickets in the upper deck, and ended up right behind the dugout for about the same price that reds.com wanted for the upper deck.
Some of the games only offer about 10% off, so keep searching until you find a steal.
The game I got the deal on was vs. the Giants on 4/26
Stub Hub is great if you time things well. Last year during the atrocious series with the Mets where the Mets won on Mon-Wed and the Reds looked awful.....I got on Stub Hub after Wed night's game and got front row 145 section seats for $6 each. Son and I had a great time with tons of balls and plays right at us.