Thanks for the reply!
As for space, I was going to set it up outside, so I've got almost unlimited space in that sense.
If I was going to get a swinging bag, I'd get one of those bag stands that I'd setup outside. So either bag is equally doable, I guess just cost would differ, as the bag stand would be another $100 or so on top of the actual bag cost.
Would the swinging bag be worth it even if was a 50% increase in cost?