Not a fan of MK due to their recent QA issues and bad warranty policies
I'm not good enough to tell you what blades are good spinners.
But it's very confusing - you can find people who love just about any particular type of blade. And different people say different things about each blade and feature.
MK and JW are now the same company (HD Sports), and last I heard are produced on the same production line. One plus is that they have shiny (chrome plated) blades, with beautiful engraving. But they have a reputation for inconsistent rocker profiles and sometimes unintentional blade warping (by which I mostly mean horizontal long-wise bend - one person here wants to call that something else, but this is what all the skate techs I've discussed it with call it, though occasional twist warps can occur too).
And yet, a lot of people use and love them, including (I think) most of the world's best skaters. But maybe that is partly because many skate techs routinely re-profile them when new, to the shape
they think the blades should have - which means the blade shape may be a lot different depending on who your skate tech is, and possibly, what they think you would want, based on things like your foot anatomy and how you use your blade. (To some extent that is for all brands - but even many 3rd rate skate techs who aren't good enough to do it right have been told to re-profile MK & JW blades. They can do a lot of harm.)
Before buying Revolution, Paramount, or Ultima Matrix blades, make sure your skate tech can sharpen them well. They each have aspects that make them hard to sharpen well in some sharpening machine blade holders. Gold Seal and Gold Star blades don't have sides that are straight and parallel, so some skate techs have trouble sharpening them well too - they can produce weirdly modulated blade widths and edge lengths, that I think could interfere with spinning.
Maybe if you are unhappy with your blades, you could start by asking other good skaters and coaches what skate tech they use, and switch if yours isn't the best you can find. A lot of skaters drive hours to get to a really good skate tech - and from what I've seen, it can really be worth it. I spent a fair amount of time watching one of them (now retired

) work. He had Olympic class skaters come to him, or send him skates, from half way around the world. Amazing.