I did this quick shootout (not a scientific one, I didn't use the same riff through reamping) for Axe Fx II users but it may be interesting for others too.
https://soundcloud.com/thib-de-rob/hi-gain-irs-shootout
IR used : Stock 4x12 30W (ULTRA), Stock 4x12 GERMAN, Stock 4x12 CALI, Alu Mesa Trad 4x12 V30 SM57, GuitarHack ThisOne, GuitarHack JJ FRED45-HALF, The Messiah, Kalthallen 003Tube SM57 V30, Ownhammer Bogner Beta SM57+TC30 mix, Signals Audio Freddy + Jimmy mix, GuitarHack Edge -1 inch ala Sneap, GuitarHack Fredman Angled, Catharsis s-pres high, Poidaobi ENGL V30 higher pres, Noarin Diezel V30 (Soldano PA), Alu Framus 4x12 V30 SM573'14, ASEM Recto V30, EVH 5150 III SM57 off axis, V30 4X12 SM57-609-CR3A MIX, V30 4X12 MOSVALVE 3 MIC MIX, Gary's Triple Recto
This is related to my Axe Fx II presets which I share here :
http://axefremen.blogspot.com/2013/01/axe-fx-ii-presets-irs-firmware-902.html
https://soundcloud.com/thib-de-rob/hi-gain-irs-shootout
IR used : Stock 4x12 30W (ULTRA), Stock 4x12 GERMAN, Stock 4x12 CALI, Alu Mesa Trad 4x12 V30 SM57, GuitarHack ThisOne, GuitarHack JJ FRED45-HALF, The Messiah, Kalthallen 003Tube SM57 V30, Ownhammer Bogner Beta SM57+TC30 mix, Signals Audio Freddy + Jimmy mix, GuitarHack Edge -1 inch ala Sneap, GuitarHack Fredman Angled, Catharsis s-pres high, Poidaobi ENGL V30 higher pres, Noarin Diezel V30 (Soldano PA), Alu Framus 4x12 V30 SM573'14, ASEM Recto V30, EVH 5150 III SM57 off axis, V30 4X12 SM57-609-CR3A MIX, V30 4X12 MOSVALVE 3 MIC MIX, Gary's Triple Recto
This is related to my Axe Fx II presets which I share here :
http://axefremen.blogspot.com/2013/01/axe-fx-ii-presets-irs-firmware-902.html
