Re: [panavision] Nikon or Bushnell
I've had a Bushnell for several years. I've used a Nikon a handful of times. Honestly, I don't think brand has much to do with it.
Find the smallest one you can (so you can take it up to the exit point and jump it down), get a backlit display (because it sucks to have to pan over to a light to read the altitude), and try for one in the +-6 feet range (or less) if you want to do really low stuff.
Other than that? I haven't really noticed much difference, so I'd choose by price.