I have tried quite a few units of Elliptical a few months back.
The $800-$1000 ones are fairly small in strides making them not
very good. The good one that ia big enough is $1.4K and above.
Elliptical is easy on the knee cap. Treadmill on the other hand
offer effective training in 2.4km run whether rain or shine. Given
a choice I prefer the big elliptical but it takes up lots of space.
So I concluded, I might as well spend less than $500 and get a
stationary bike instead.