Grizzly,
I am sure not knocking BYB lifts, they are nice lifts. I don't buy into their marketing hype about the welded on blocks however. The lock levers would shear off or the legs would buckle before the blocks ever pulled off! Just because they do it differently than everybody else, it does not make them better, just different. Every single lift vendor out there will give you at least a couple of reasons why their lift is better than all the others. All of these lifts are safe when properly used, and all these lifts are dangerous when used incorrectly! There are thousands and thousands of lifts out there using the welded-block safety stops, and I have never heard of one breaking off. I value my safety a lot, and would not get under one of these lifts if I thought it was anything but safe. For you to imply that these types of lifts are unsafe, is nothing but parroting BYB's marketing hype. When you look at the large number of vendors using this same design, there must be a good reason. This design gives good value at a reasonable cost. There are better, safer, more durable lifts out there, but they are commercial lifts, are not movable, and cost much, much more. If this was an inherently unsafe design, you would not have dozens of companies selling this same design. The perfect park however, I believe is a bad design, since the locks are hidden from view of the operator, which I believe is an invitation to disaster.
Regards, John McGraw