Chris mentioned the l-acoustics 115hiq.
I'm trialling 2 of these this weekend at my church. Initial testing last night:
Imagine taking a very hi quality studio headphone, making it into a wedge, and then giving it volume that can induce nausea, and you've got a 115hiq.
Using the wedge without outboard eq (they have some in the processor settings) gave me stupidly loud vocal. I'm betting that using my KT helix I could get that wedge to peel eyebrows off a vocalist without feedback, provided they followed good mic techinique.
If you're interested in testing high end wedges, try and see if you can get one or two of these. Will need lap amps for them, and specific settings for a small range of crossovers.
I'd love to hear the results. As for me, i'm off to hear the rat/radian 15's in the next week and will see how they fare fidelity wise with the hiq's.
Wish I could be there but there is more than pond between me and your albany.
Andrew