Brrrr... help me pick a shelter!

1. Must be 4 season.
2. Must be able to fit in ALICE pack.
3. Must be able to accomodate my long legs (I'm 6'4").
4. MUST NOT BE TOO EXPENSIVE.

This is what I'm looking at right now:

Outdoor Research Alpine Bivy
MEC Hybrid Sleeping Bag -20C

Combined price of both is $371. This is roughly the price range I'm trying to stay within. I'm willing to go a little higher if the benefits are worth it, but not too much higher.

Let's hear your input!