My first 3 or 4 launching cradles were the suspension type using webbing from Harbor Freight (tie-downs). They worked fine but I found the need to set a heavy boat down once or twice while transporting it from the bench to the water (about 80 feet) without damaging the props or rudders.
This frame cradle also allows me to set the boat the boat on the dock just prior to launching to make any last minute adjustments.
When prepping the boat it's on a table. Suspension straps are clumsy getting them on to a good sized boat on a table. With the frame cradle I just set it on the ground, lift the boat off its stand and slide it in the frame cradle, pick it up and go.
At the dock I just dip it in the water and throttle the boat out.
As I usually bring multiple boats to meets, this one size fits all cradle works great. Just like eating soup with a spoon!