Juez
DragonPuncher
I'm only at day 10 (stretched over 13 days >_<) and I'm already getting some results. I could barely do any of the AB Ripper X and now it's at the point I can do everything with them except I needed breaks on the Scissors and that final exercise. My abs feel solid and I'm startin to trim fat so hopefully bout week4-5 I'll have that 6 pack.
As for adjustable weights, get ones that can change quickly. I bought some crappy ones at Walmart and they take so long to change it's not worth it and as well as some other issues. If you want an alternative get a set of bands. They're MUCH cheap, but i prefer the weights.
Don't get demoralized. I'm still doing really sloppy versions of the lot of the exercises with lower reps than them but it gets smoother each time. Always look for cheater methods, but try to grow out of them. If you feel a burn, your doing it right. I'm gonna be using a chair for pull ups for awhile :/
Nothing wrong with using the chair for pull ups, seeing as most people don't use their back muscles often.