whiz mita 996 is not that rare and was widely available. whiz collabs from the mid and late 00's are much rarer and were only available in japan.
I'm a huge fan of revlite, but also my body frame is pretty slim and light. revlite is not a good choice for a heavier person, or someone who might be super tall. I think abzorb cushioning is more versatile and good for most people. i love all three systems, but i do find that encap is the "loudest" when walking on sidewalks and concrete. it's more noticeable when it's quiet out and there are no cars driving by or something.