I have a WM3770, about 5 or 6 years old. It seems similar to the current WM4 series. I love it. My first FL. I was skeptical at first, but it's been great. I used Turbowash and would theorize it might help with rinsing. The "bulky" cycle uses more water than other cycles, but it defaults to "medium" or lower spin speeds only. Mine has the steam option, which I rarely use, same with cycles that use the onboard heater. I usually leave the door and detergent tray wide open for several hours after use, then there's a magnetic prop thing that keeps the door closed but cracked open.
My typical cycle is bulky, warm, turbo, +1 extra rinse @1hr 3min. I hang dry most of my clothes. Towels on towel cycle, and some clothes on normal or gentle. I only dry sheets and towels in the dryer, and even then they only take 15 or 20 minutes (matching LG gas stacked on top).
Lastly, they're stainless finish and sexy AF.