I recently purchased a set of 4 Toyo Celsius 2 tires for my 2019 Kia Optima. After living with them for a couple of days, they're good but they have a couple of weird quirks.
Pros: Pretty quiet, great snow/ice traction, soaks up bumps great.
Cons: The compound feels unnervingly soft, to the point it feels like it's running on low pressure (it's not). As a result, I feel like dry handling takes a big hit. I can't speak much for MPG but because of how soft the tires are, there seems to be a lot of rolling resistance.