As far as gear, hypers definitely.
As far as configurations go, I've come to the conclusion that running XY in boomy rooms is not all that helpful. Maybe it helps a little but personally I think the tradeoff of improvement is not really worth the compression of the sound stage.
I go for a sort of intermediate config. Basically DINa with the included angle cut down to say 75 degrees or so instead of 90.
I have ran 'modded' configs a BUNCH of times, and they usually work GREAT for the most part. Usually 'modding' the configs angle emans that I am basiclaly just pointing at the stacks, or at least moreson than the standard DINa/DIN/NOS/etc would allow. And then I mark about where those modded configs are in relation to spacing and angle, and there you ahve it. Ive had alot of great success w/ running hypers, but instead of the typical spacing of 17cm w/ hypers, I have ran them ALOT in a 3-4" MAX spacing, and then just poiunting at the stacks or outside of the stcaks from there. That helps cut down on room acounstics and chatter, but still maintains somewhat of a stereo signal/sound but not nearly as mono as XY, since I have been a HUGE XY hater all of my life really.
So yeah, try running hypers w/ a 3-4" MAX spacing and altering the angle until it is pointing pretty much at the stacks. Usually that angle ends up beinga round 60-80 degrees
And as always YMMV. There is only ONE WAY to find out, and thats to experiemnt and try thinsg for yourself. EVERY venue/room is different, and there is no ONE WAY to mic ANY room, except to try things and see what works. Just because you and me or whomever says 'try this' doesnt mean its going to work for the room you are recording in. Thats what makes a great taper IMO, is the ability to walk into ANY room, and pick a location to setup, and then adjust your config accordingly