As a gym freak, I think I can guide you.

Most of the stuff sold at mass market retailers is absolute crap. It will not last if you use it seriously.

Go to a gym for a free trial. Most will give you a week. Do not sign anything.

See what equipment you like. Try epinions for ratings.

Good equipment is costly but will last. I work out an hour to an hour and a half daily on a Tectrix stairclimber or a Stairmaster 4000PT. Both are professional grade. We own the Stairmaster unit.

As an alternative, some gyms have great deals. Planet Fitness has a deal now in my town for a guaranteed $10/month for 3 years, $30 initiation, and no commitment. Just don't sign any contract with a commitment, no matter what you're told about easy cancellation. If it ain't in writing, it ain't so.

Good luck and good health.