We are in the market for a piece of home cardio equipment and due to DH's imperfect knees, we think elliptical is the way to go. (If you are about ready to post about how we should go outside and ride our bikes and all that, don't bother, please.) We had one that we always sort of hated and finally sold when we moved. The issue was that it had a ton of give in it to it ka-thunked with every rotation, especially if it wasn't on the lowest elevation setting, making it loud and impossible to enjoy the trash TV that is my workout companion/reward.
Our previous one had built-in (e.g. I climbed Mt Fuji, complete with video), interactive workouts (Peloton style) which were kind of nice, though we didn't pay to keep access once the free period expired so choices were limited. So this isn't a must-have feature.
Ideally, I'll come up with a list of a few models and then stalk Marketplace et al. until I find one gently used. Which ones do you love, or hate, and what is it you love, or hate?