I'm actually interested in a fruiting quince, not flowering quince. (Though I just googled images and they are lovely.)

Every spring it had beautiful white sweet smelling flowers. I was looking forward to finally getting fruit this year, but our hard winter froze the quince 3 feet down the trunk. It has set out shoots now, but I don't know how well it will do.
I also had a cherry freeze back to just the trunk and a few short branches.

The flowering quince is Chaenomeles speciosa or C. japonica and hybrids, etc. With a good microclimate and mild winter, I could see it being somewhat (but not reliably) hardy across most of Minnesota. As one mentioned, easily with severe dieback if not fully protected under snow in Jan and February. The small fruits of flowering quince are edible, but they are tremendously bitter.

Thanks to the highly misleading modified USDA zone hardiness maps sent out by the Arbor Day Foundation, nurseries are feeling empowered to bring in marginally or fully unhardy plants into new regions, mainly for $$$ (market share). :(

I was just out there this week, and both of them are still alive! They suffered some dieback, but that was to be expected. The location was a somewhat sheltered region (eastern side of our windbreak, backed up by 3 rows of spruce and red pine to the west). I didn't get the bales of straw around them for insulation like I had planned on, and we didn't have another mild winter like so many previous years. They are back to their original 1 ft height, but the regrowth is looking very vigorous. I'm hopeful that if I baby them the first few years with straw bales and piled snow for added insulation they'll make it on their own later on.