No one form of cardio is inherently better than another. What matters is how intensely YOU work out. WIth any form of cardio, you can cruise along and not get much benefit, or you can really put in some effort and get much more of it.
Picking something that you actually enjoy is probably the best option, as you are more likely to stick with it in the longer term (ie. incorporate it into your lifestyle).
Exercise videos are one option for at-home exercise, and can perhaps be somewhat less boring than an elliptical or exercise bike.
Also, any good exercise program that has fat loss as an objective should include BOTH strength training AND cardio. Without ST, up to 25% of your weight loss can come from lost muscle rather than fat. Including ST is a very effective fat burner, as it helps ensure that more of your weight loss comes from fat alone. Resistance bands are an excellent first purchase of ST equipment, and are definitely apartment-friendly.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0