I purchased two Evenflo Revolve 360 Extend and they are amazing. Super easy to install and they swivel with easy. My 2 year old is 37 pounds and the carseat has no issues swiveling with her weight. Thank you for making them with a higher weight limit to rear face. 
My only complaint is that I wish the version with the easy to clean fabric also came with lifetime warranty like the gold version since there is only a $30 dollar difference, or offer a gold package with the easy to clean fabric.