Using MyPublisher here. Don't want to post the link just yet because I noticed a buttload of mistakes (OOPS!) while going through it that I want to fix, and it's not done yet.
There's 20% off for any order over $50, and 40% off for any order over 100, so we're aiming for the 100 mark. The coupon code is right on the front page.
There's also a buy one get one free coupon, but I don't think you can use them at the same time.
I downloaded the blurb program to check it out since you can have a LOT more pages- but for the size book i'm getting (dimensionally) it's less expensive to use MyPublisher with the discount. A smaller book would be cheaper but I want something decent sized.
I also couldn't figure out Blurb's software, so that probably didn't help

I also like the layouts on MyPublisher better, just my opinion though!