These came as factory equipment on our 2010 Santa Fe, and I would not buy them again. I wouldn't go as far as to say they are poor, but I think there is better out there (and likely at a cost). If you're looking for a tire that is affordable and quiet, these will accomplish the task nicely. It looks as though we will get about 65-70,000 Kms out of ours which isn't bad, wet-weather traction is acceptable but grip is all but gone as soon as the temperature drops below 0. This is common on all-season tires, but I have used better-performing all-seasons in the past. On the plus side these Kumho's are quiet on the road and offer limited but acceptable grip during cornering/acceleration. We aren't hard drivers in our family vehicle - I'm sure if these were on my Mazda hatchback I would have more complaints about limited grip.
If you want a cheap tire that gets the job done then go for it, but since your tires have such an important role to play in safety, handling, comfort and control, spend the extra few dollars for a better product.