I'm looking at the Performance 600 by Proform,
here
I prefer TMs over ellip due to hip and knee pain when on the illiptical.
Plus, we hike alot and the quick incline capability on the treadmill is great for helping me train for a big hike. Also, you can shake things up on a TM and get some running time in as well.
just my 2 cents
hth
good luck with your decision
s