When we where shopping we really loved the 480 after the wet test. We went back a week later after the dealer filled a 355, i hoped to love the feel of the 355 and save a few bucks as i didnt really think we needed the "extras" of the 400's. But after climbing in and out of the 2 tubs for about a hour we just didnt like the feel of the 355 as well. It was a really big difference in the comfort for me and my wife. We wet tested other brands as well and was amazed at the difference in feel even within the same brand. I can say with big letters "WET TEST", every persons shape and size and needs are different.