[Doug Plumb]

Line arrays wont give you the pin point imaging but will handle more power. I would go for a good 3 way or build a good tri- amped three way with a DSP crossover. This can be made powerful enough.

Line arrays are less efficient if it means putting a lot of drivers in smaller boxes per driver.

"Creating a single wave that does not have interference issues like crossed-over drivers?"

There are all kinds of phase cancellation issues unless the array is much longer than the lowest wavelength produced.

They don't have floor and ceiling reflections which is a big advantage but I like point source.