I think the one advantage the Figmas have over the Figuarts is the fact that Siren and Wing Knight both have fabric capes.

I dunno, I feel like I'm the only one whom likes the Figma Dragon Knight figures…they just look more convincing as dudes in stunt suits to me.

And I'm the kind of guy who thinks "Gary's brand Super Cola" tastes no different than Pepsi or Coke along with being much cheaper. :lol

I like them too, the rubber suits are a nice touch. It's just brought down a little by some of the details not being quite there. Like the figuart has those awesome blue eyes that Knight has in the show, while the figma is lacking it.

This. As far as I've noticed, most of the regular releases are pretty affordable, basically negligible to the Figmas. They can be had for prices mentioned above. The only ones that are expensive are the aforementioned out-of-print figures like the silly expensive Knight. Also, I think the Dragon Knight figures were rushed as they, from reviews, are plagued with QC issues. So what everyone else has said so far applies. I've yet to get a figma, but will start with Avengers Thor. So I'll revisit this discussion when I get him.
This too.

That's a good point. Look, I think the Figmas are great for what they are. They do seem closer to the in-show look than most Figuarts, and are great sit-ins for the more expensive counterparts, but, again, you get a better overall collectible with the Ryuki figures. If you just need some Ryuki figures, love the sculpt, or are a DK fan, get the Figmas. If you want the full premium experience & better/more accessories, get Figuarts.