I'm not too happy with the results I'm getting out of my Rode NT1 or SM57 for my acoustic guitar (Takamine ESF-48C). It appears that the above mentioned mics have an awesome track record. I was wonder if anyone had any hands on experience with both and could make a recommendation. I'd also like it to double as an overhead for drums. I'm somewhat leaning more towards the Oktava, since I can get a stereo pair for a little more than the SM81, but I'm also worried about the "you get what you pay for" addage. Any tips would be appreciated.