Have Xi3s on the Forester (previous were WS70s) and WS80s on the Mazds3.
Completely unfair to test since the Forester is far better in inclimate weather than the Mazda, but the Xi3s are not disappointing on the Forester at all compared to the WS70s they replaced.
The Mazda without traction control is pretty meh on get up and go, but feels stable for lane changes and braking.
All is to say you can't go wrong with either. As for claims that the Bridgestones wear faster, that's not what we experienced with the WS70s on the Forester, which lasted 6 winters and about 35,000km when they were replaced with more than 9/32" left all around. They were also mounted early (October most years) and came off late (May).
Recommendation is to go for whichever is cheaper, honestly, since you can't go wrong with either choice IMO