we start with the speaker, and determine which amplifiers will work and which will not, and then go from there.
We can talk about current in isolation, but it seems easier if we started with an example of what speakers you wanted to consider running.
Not to get too technical but in terms of current, since the speaker is a "load" can we not say that the speaker will have a certain current "draw" in order to reproduce the signal being sent? If the amp does not have the capability of providing that draw, is that what leads to the amp clipping? In other words, the question isn't so much amp output current but, as some have been saying, the amount of current draw by the speaker. One must understand that and choose an amp that will meet that requirement. I have never seen specs. for either but I have experienced it.