Mordante hi,
For what amp will sound the best for you really need to see an impedance/-phase angle graphs on them, I've looked for you and there's nothing.
Failing to get these graphs, the next best is to email the designer and ask them if they have the graphs or last option if they recommend what type amp drives them the best.
Before getting on the amp merry go round, to find what amp drives them the best yourself.
Cheers George