Thanks. That why I come here for advice from those who know better.
I like the idea of not having two bikes in the basement all winter and set up seems simpler on the spin bike. Also, there is less wear and tear on the bike and I won't need to buy new tires. That being said, from a few things I've read here I believe most agree with you.
Oh well - I have a few months to decide. Thanks for the input.