Reasonable Mic Selection, Choosing a mic priced to match your gear Options

[Hugo Cole]

I've been looking at the mic postings and I've seen some names bandied about - Behringer B1, Studio Project B1 and C1, Rode NT-1, and of course Shure SM57 and 58 (which I understand aren't condenser mics, but I'm including them anyway), among others. I also realize that many believe that one mic shouldn't be used for everything. That having been said, I am looking for a mic that does everything, particularly (from quietest to loudest) acoustic guitar, vocals and horns. I will be using an imac g5 with a presonus firebox.

My question is, with my setup, is it worth it to purchase something like a rode given the quality of the preamp, or should I just stick with something cheaper, such as the studio project or even the behringer? I have seen it proposed to get a really good mic and then upgrade the rest of the gear later, and my funds aren't THAT limited. Any advice? Or any other product recommendations?

Thanks