Steppers, step or stepping machines etc are cardio workout machines that greatly vary in size, functionality and price - from small, cheap units that offer basic cardio workout to relatively big, complex and pricey units that are sometimes even combination of ellipticals, exercise bikes and steppers.
Of course, which one is suitable for you, depends on many individual preferences.
Stepper reviews and recommendations, ordered according to the date added or modified:
Maxi Climber Vertical Climber has become popular soon among those who want to get into shape quickly and easily at home by engaging all major muscle groups of the users using only their body weight. The machine has been proved to be very effective in achieving the said purposes and at a very reasonable price. It has been designed with short sessions and low impact, and hence, can be used by most people.
Xiser Commercial Portable Stepper heavy duty portable stepper made out of cast aluminum. It has the same step height as the Standard Model but features larger cylinders for extended commercial or gym use. Expensive, but very strong and durable.
Sunny Health & Fitness Twister Stepper is a very compact and robust stepping exercise machine with great price tag. Although primarily used for glutes, inner and outer thighs and calves, with stretch bands it can be used for (almost) full body workout.
Multisports ST-2200 Stepper is great home and gym stepper exercise machine with many features and acceptable warranty. Although very robust and solid, it has relatively low max user weight (225 pounds; 102kg) which may be problematic for larger people - others will enjoy this exercise machine for long period of time...
Avari Programmable Stepper is big, sturdy and expensive stepping exercise machine. It comes with plenty of features great machine should have - if you need occasional stepping exercise, this machine is probably overkill for you, but if you need something much more, have this stepper in mind ...