Just looked at that BWS Air Ramp/Air Tilt 20 ART/25 ART trailer on their website.
I can see maybe that the air ramp feature might be nice, not having to lift those heavy ramps.
But I really see no sense in having the deck tilt. You still have to break over the transition from the beaver tail to the main deck. How is this really any different than loading without the deck tilted, except for a slightly lower approach angle.
But unless you need to load two pieces of equipment a tilt bed is the way to go. Quick, easy, no heavy ramps to lift, etc.
I really like our TrailMax TRD50 tri-axle tilt trailer with 49,000 lb capacity, and we have owned Eager Beavers, and Trail Kings. In fact still have a B9DOW Eager Beaver that just sits around, and should get rid of it since we use the TrailMax for everything now.
You will find at least in the NW and west coast that the TrailMax's have pretty much taken over the market from 5 to 25 ton tag trailers.