Aura NS3 or NS4 for slim MTM setup?

[silvercans]

I was planning and running a pair of Aura ns3 in an mtm config with a seas 27 series tweeter, but a couple of people told me to go with the ns4 instead. I can't seem to find any reviews on the ns4, also their FR doesn't look as flat as the ns3's in the mid region. Any suggestions on which to go with?

 

[Landroval]

The NS4 has lower Qts and should work fine in a small reflex. NS3 needs a bigger closed box I think.

 

[noah katz]

The NS4 with 6 mm xmax and larger Sd also has a lot more output capability.

I'm thinking of using them, too, so please give it a go anmd report back