I use Authority Pro for all my sales and squeeze page creation online (except for Facebook of course where I use the iFame software). In my opinion, Authority Pro is better than Optimize Press for not only creating awesome Sales and Squeeze pages but also creating an entire WordPress theme. These guys also provide excellent training on how to create a converting sales and squeeze page.
Go check out the free video and demo. They even give you a free 14 day trial to put it to use. All the sales pages you’ve seen with my products were done with Authority Pro. Just click here to check it out.