Barletta's ultra-lounge on their "L" line is the nicest and most versatile "sun deck" option on the market in my opinion. The fold-flat option is 2nd to none for sun worshipers. The SB on the Bennington SB models is good and I like the width. I'm 6'3" and I can lay flat width-wise. If it laid flat like the Barletta I'd be a lot happier with it. If you added the adjustable (and lay-flat) headrests on the foot end like Barletta - A++. The versatility in a Barletta LxxU is my dream layout. My pontoon use is sun bathing, swimming, cruising and sometimes partying.
I own a Bennington 23GSB with the SPS package and there are two things I would change on that boat.
1. The under-deck skin doesn't go all the way to the front of the boat. For some reason that feels ridiculous to me and I'm thinking about adding my own under-decking to finish it off. Even though it probably has zero impact on performance I find it annoying and cheap looking.
2. The mooring cover J-clips (is that what those are called?) aren't strong enough. It's a 2018 and 2 of those clips are already broken. They're impossible to find and the ones that I did find on ebay are $18/per. On top of that, I'd love some instructions showing me how to replace those.
Otherwise I love the boat. It's perfect for my family of 4. My 2 girls and wife couldn't care less about my 2 complaints and they would LOVE a lay-flat lounge area.