I've used studs a lot in states where they were legal, and they definitely give you a big, big advantage for traction and braking. I found no technical disadvantages in having them.
-- You must stud all four tires for fwd cars, or your back end can swing around when braking
-- you will have to (or want to) change all 4 over for summer season.
-- you will not be able to drive into neighboring states that don't allow them, while you have them on.
-- cost, of course
Chains are a hassle and are generally only used temporarily for mountain passes, or if you actually live in tough mountain situations (which may apply to you, I don't know)
Alternatively, there are great snow/ice tires out now, but the best ones, you still pretty much have to take off in the spring or else the soft compound wears very fast. And they will be more expensive than studding an economical all-weather tire for your Nissan.
(BTW, "Two Bonnies" is not being a "wuss" about this. West Virginia is about the last place in the nation I would want to be caught in a bad snow storm)
1998 Bonneville SE 75K
1994 Bonneville SLE 125K
(1990 Bonneville LE-ST (ST=Stolen&Totaled--sigh!)