Thinking about a row machine

I am thinking about buying a rowing machine for my home gym. Any suggestions?
Piston, yes or no?
Do you have one? how is your cardio experience with it?

Re: Thinking about a row machine

I use one at the gym for Interval training and it really has helped my stamina , toned my upper body and increased my weight loss. However just the rower may put strain on certain muscles, you need to add variety and break it up.