Photo Guest Book

On my list (it has been forever) is our wedding guest book. For the longest time I wanted to do a photo book and I almost used Shutterfly's because they were having a sale. BUT I misunderstood the sale and it didn't matter. Now that I've had more time to research it, I've narrowed it down between MixBook and Picaboo. I really wanted to use a photobook for a guest book because I wanted to take advantage of the engagement photo shoot we had. We love our pictures but after the wedding, I'm afraid that everyone will be oohing and ahhing over the wedding photos and forget about our engagement pictures. Of course, the wedding is probably more important, but our engagement photos were shot where we first met almost 9 years ago and also where Mr. Keswick proposed, so they're very special to us. Plus, I feel like the guest book will be more interesting for the guests. They even made some of my friends and family cry, so I think that's a step up above the usual blank lines and spaces. (Mr. Keswick was opposed to our guests signing a matted photo that we would hang. Not sure why, but I was fine with it.)

Has anyone had any luck with these? I like how neither make you download special software. I don't want to spend more than $50 on a guestbook and these are great professional options.