I have a mix of Nikor, Kinderman, Omega, and whatever other brand(or undbranded) ones I've accumulated.
Honestly, with 120, I don't notice much difference between them. Some of them do have distinctive film clips, but I don't really like any of them as I find they all tend to distort the film enough to make loading difficult. In fact in some ways I prefer the less robust wire clips on "generic" reels as they seem to just get in the way less.
All 120 reels use heavy gauge wire, and they are both more durable and IMO universally nice loading. I'll ocasionally get one that's banged up and won't load right, but the chances of that happening are MUCH lower than most any 35mm reel(I even have one Hewes that I have sitting aside-I can't bring myself to toss it-that looks to have been dropped, has some bends, and doesn't load well).
220 is a different story. The 220 Nikors I have are measureably better in most any way to other 220 reels I've used. Their construction is a lot like a 220 version of a Hewes 35mm.
The only real downside to the Nikor 220 reels-and this is a big one-is that they are ~4 1/2" in diameter, and not the standard ~3.5". This means you have to use a special tank designed, as best as I'm aware, just for these reels. I only have one-it's a two reel tank, but I've never developed more than a single roll in it. A lot of that is because my recent 220 film has been C-41, and I only had 1L of C41 chemistry mixed when I was doing it. As best as I recall, I measured 1.25L to cover both reels.