OT : all seasons for A4?

[feelstranger]

Folks. wife's new (er) A4 needs tires and I was debating just getting a good All season set and calling it good, instead of a winter wheel set, and a summer wheel set (Vermont).
But, I'm starting to wonder if any tire in 235/17 could possibly work well in any snow.  In the past on the good 'ole Subaru, I only ran all seasons and lived in NH without problems.  
But they were 195's
I got a set of studs/wheels with my 20v so I've no experience with larger all seasons.
Any input from experience?
Yes, for the relatively low price I should probably just get the snows for her, but if I go that way on every decision I make, we'd be broke!

Thanks
Nat