I have the AKG Perception 200. It's decent for acoustic if you play with positioning and find the right spot for it. On my Taylor I like it right behind the bridge. Strange place to mic an acoustic guitar I know, but it works well for me

It's too bright at the 12th fret and still too boomy right at the sound hole. Just behind the bridge has a nice midrange tone for my purposes. The Taylor is a bright guitar though. If you have a darker tone you might find good luck at the 12th fret. Positioning is EVERYTHING! It changes the tone in a HUGE way so move the mic around a lot to find your "sweet spot". This video will give you some good ideas and comparisons:
http://youtube.com/watch?v=m4d-BwkciOkThe AKG Perception 200 is fairly detailed and crisp. It has some magic but it can be a lil' edgy (and too bright sometimes) on the high end. For vocals, I didn't like on my voice. Had trouble with sibilance ("s" and "t" and "z" sounds). For the price though, it's a GREAT mic and I'm sure you'll be pleased with it

Rich