I still have the original Workmate, as designed by Ron Hickman and manufactured by the firm he set up, Mate Tools, because none of the existing manufacturers he tried to sell the idea to thought it would catch on. It's over 38 years old now and still in regular use. The only thing I have had to replace are the two plastic knobs that you tighten up when you open the Workmate.
Since buying up Workmate, Black & Decker have ruined what was a fantastic product - but then Black & Decker is usually the kiss of death to any product they buy IMHO.
The original Workmate had several good features, like an adjustable foot so that it didn't wobble on an uneven surface, solid Beech vice bars and a strong plywood base that you could stand on to give it extra stability when necessary. The only problem with it is that it's saw horse height, which is a bit low for some uses. That problem was solved with the second, dual height version.
Then Black & Decker bought it and it's gone down hill ever since.
Cheers
Paul