I'm using DM-V1 Blizzaks and I think they are great (this will be their 3rd Winter). They only come with an R rating (170kph), but that's enough for the Flex.
I need good grip as the Flex is rated at 365hp and 350lb ft of torque. It's my Winter car.
I did go down 2 inches in rim size and up in aspect ratio for a more narrow tire, but they work great in the rain, ice and snow. On dry roads they do squish a bit and are a bit noisy but you can stiffen them up by increasing the air pressure.
But they definitely don't drive like Summer tires.
In the past I've also used the Nokian Hakkapeliitta, and they were fantastic, but they are a little on the expensive side now.
YMMV