Repetition method question to forum members

[sudaca]

My understanding of this method is that it should be used never to failure always stopping with one or two reps left for each set.
If I do sets across I assume the weight would get harder with each set. Since I do not want to train to failure using htis method, what would be the best approach:

1- Just do as many reps as I can for each set without going to failure even if the reps are not the same for all sets.
2- Keep the reps constant but decrease the weight on each consecutive set.

I hope this makes sense to you. Thanks in advance.