Kelli,
Hi. Saw no one had responded to your post yet, so thought I'd give you my .02. I run outdoors 95% of the time but for those times when I can't due to weather, etc. I do have an elliptical (a Life Fitness). My husband is isn't quite as "into" running as I am, uses the elliptical as his primary cardio. We purchased ours at "2nd Wind" and got one that was more towards the higher end, both price (around $2000) and "bells and whistles" (heart monitor, multi programmability, etc.). WE both feel you can get an incredible workout on this (less the impact of running). Having said that, I am also seriously considering getting a True treadmill soon just for variety. You can certainly get an elliptical for much less than that that will provide good benefits, this one just seemed to "fit" me better and I wanted to get one that would last forever. OUr first elliptical (now in basement in our weight room) was purchased for about $400-500 and also provided a good workout, just not the same "extras" and didn't seem as comfortable to me. I'm sure he'd be happy with either piece of equipment!!! Just try both out for an extended period of time to made an informed decision. good luck.
Karen