Straightsailor

I've owned all these :

Ab Slider
Ab Doer
Ab Twister
Ab Gym

And To be totally honest, it was a huge waste of $$$... I could have gotten a better workout using a excercise ball (a rubber inflated ball) that you could pay $20 US at the most for... I would suggest looking into it if I were you, it's a lot cheaper and %200 more effective than anything you could buy off TV... And keep in mind, none of these machines will give you washboard abs unless you have cardio somewhere in your workout

Just my two cents

[url]http://www.resistaball.com/[/url] (link to a exercise ball)

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TRAIN cause it's in your blood, EAT to feed the machine, REST to grow for the next day of INTENSITY!