well i've never tried ur mic for recording but if it works, and ur recordings sound good enuff, dun change!
but if u wanna get ur feet wet and expand ur sonic palate, well, industry workhorse Shure SM57/58 comes to mind for recording guitars.
for acoustics, the fairly reasonably priced russian made Octava's come to mind. Behringer's B5 mics seem to have gotten good reviews but they tend to have a little more low-end than most.
for vocals, can't comment, but i am very happy with my behringer b1 mic. as u noticed i am talking mostly within the home-recording price range. if u got the dough, and a proper studio environment, then Neumanns etc shld get u somewhere
anyways, the AT4041 is another good one to consider for vocals. and of course many have raved abt the studio projects c-1.
so, yeah juz some fo the good stuff i been hearing abt these boys. hope it helps. sorry i dun do drum miking. its another story on its own. heh.