mm, i'm in philadelphia. we have knockout roses all over the place, here. they seem to be the plant
du jour, and appear to do well in our climate of sticky humid summer and bitterly cold winter (not as much snow here as in ohio, though, but we're in the same climate zone as you, i think)
the knockouts are very pretty when in bloom, don't seem to get leggy, and even look nice when they aren't blooming (unlike some rosebushes).
i had lots of holly at my old house. i learned that holly requires a good deal of pruning, and it can easily get out of hand.
because it is so prickly, i sustained quite a few scratches whilst trying to keep it trimmed. I eventually gave up on it, chopped the things down, and then they just came back with a vengeance over the course of the next year.
it's good for discouraging pesky burglars, though. i'd recommend coating the holly with toxic alkaloid extracted from some Columbian poison-dart frogs for a little added security. I'll get you the email of a Chocó Indian medicine man that I know......