I only have experience with a Rossi 92 in 357, so I won't pass judgement on the others.
My Rossi is OLD, pre lawyer safety, imported by Interarms, so my experience may differ dramatically from others. I can't say enough good things about that rifle. My dad picked it up at a gun show cheap decades ago, and I've been shooting it ever since. The action is smooth and crisp, acceptable trigger pull, and actually really darn accurate-especially with hand loads. In fact, I can load weak 357's to the point the gun doesn't move on the rest when fired, and you can plink all day long cheap and easy.
I have a friend who has the newer Rossi 92 in 454 Casull as a moose and bear defense gun. He had the safety removed and filled the hole with a peep sight. He feels about his gun the same way I do about mine.
There is a guy down in Texas or Oklahoma or someplace that specializes in tuning Rossi 92's for CAS. Might be worth an internet search.
As for the Miroku guns, I generally denigrate them, not because they're bad guns, but because they're Japanese made Winchester and I find that abhorrent. However, I've never personally fired one, but every person I ever met who has had nothing but praises for them, and I think that says a lot. I didn't know that Miroku made one in 32-20. I really like that caliber, having a revolver in that cartridge. It's an accurate little cartridge and fun to shoot. Good small game caliber, too. I carry one for grouse at my cabin. If I could buy a Miroku gun for a lot less than an original, pre-64 Winchester in 32-20, I might swallow my American made pride and give it a try.