I use two of these in XY config to record rooms, and the quality is phenomenal. I usually close mic guitar cabs and other instruments, but if you just have two mics, 2x M3s would be enough I think.
These things are indestructible and for the money they are AMAZING !!! Very user friendly small diaphragm condensers with a selectable high pass and come with a pop-filter included. GREAT for drum overheads, and also really great on vocals and clean guitar. Rode is just awesome imo