Speaker with most dynamic PUNCH?

Lack of dynamic punch sounds like power compression to me; for example, the signal going into the speaker calls for a 10 dB peak, and your speaker only delivers an 8 dB peak. As a result, the liveliness and emotion and impact are sucked out of the sound.

In general, high efficiency and/or high thermal power handling are predictors of good dynamic punch. Unfortunately drivers with these characteristics tend to be expensive.

Duke

I guess highly efficient, large drivers will have the potential to 'punch' more so, since they can move more air with less power.

What that translates to in terms of the quality of the punch is another matter.

Not sure you will get a lot of punch with 2 ways, especially monitors. You'll need a big box.

As always, big sound with big quality costs money.

I think Marty McFly's guitar amp was pretty cool.

Almost any in the Tannoy Prestige range. And they are all two-ways.

Oris 150's with Lowther drivers a good bass cabinet.