Personally, I like my stainless Mini-30. It's been 100% functionally reliable with a wide assortment of ammo. It's light, handy, easy to use, and about as weather resistant as they come given a laminated or synthetic stock. I bought mine NIB at a gunshow for $389 a few years back.
I have to agree with the complaints about the stock sights. It's almost as if they were an afterthought, to be used when optics had failed. While that set-up fits the marketing concept Ruger presents for the "Ranch Rifle", it kinda misses the full-function mark, IMHO.
The rear is a cheap fix: a Williams GRS. The front is hell-for-rugged, but way too coarse for anything but fast work at close ranges. I'm still working on finding a suitable replacement that doesn't incorporate some sort of superfluous muzzlebrake/flash hider gizmo.
Yeah, Ruger's PC-driven policy re: magazine capacity bites the biggie. It takes some work to assemble an adequate supply of reliable aftermarket high-caps, as you might have to buy and test ten to find three or four that'll work 100% in your rifle. FWIW, I've had better luck with the twenty rounders in this regard than I have with the thirties. On the 'plus' side, this may well change for the better now that the AWB has gone bye-bye and the aftermarket can respond to demand.
I've only fired one Saiga, and was greatly underwhelmed. Most of that may well be attributable to personal preferences in control layout, balance, handling qualities, perceived quality of manufacture, etc. Objectively, it wasn't as accurate than my Mini, and both of them take a distant second to my Polytech SKS. I couldn't do any better with the Saiga than with your average AK-clone at 4-5" at 100 M from a bench. My Mini will average about 3-3 1/2", and the SKS will break 2 1/2" with a particular lot of Norinco ball if I'm having a good day.
Ruger's political failings aside, I'll still trust the quality of their manufacturing, QC, and customer service more than EAA's, or Izhmash for that matter.