IMHO, the nearest thing to compare the Mini-30 to is the SKS.
I had a Russian SKS. Back then, it didn't quite fit me, and the aftermarket selection didn't provide any stocks that fit me (at least not that I was aware of). I sold it and later got the Mini-30. For a 7.62x39 rifle, I like the feel of the Mini.
Nowadays, with the stock choices we have, I'd be torn between the SKS and the Mini. My perception is that the SKS is built like a tank and will definitely gobble up anything you feed it. Current models are about half the cost of the Mini.
On the other hand, 20-rd Ruger mags are very nice, my stainless steel Mini is plenty rugged enough, I can (and did) have the trigger worked on (not so sure you can do that with the SKS), I trust the spare parts I can get more than what I could get for the SKS, and my Mini is more accurate (and can be improved with a newer strut, if need be).
So ... if I had to choose between a Russian or Chinese SKS at $500 or more versus a new Mini-30, I'd get the Mini. If the Russian or Chinese SKS was $400 or less, the SKS. (I don't care much for the Yugo SKSs, so I left them out.)