I wholeheartedly agree that the Highlander and Fishman systems work extremely well. However it is interesting to note that the legendary Martin Carthey used a Radio Shack lavalier microphone (lapel type) with remarkable results. Certainly an area for cheap experiment for the rest of us. Best loudspeaker system ever heard for acoustic guitar was a tri-amped dipole (open back bass and mid drivers which was rented to Leona Boyd by Thompson Audio in Victoria, B.C. This was as close to believable acoustic tone production, transient response and natural character as I have ever heard. Also I read recently, that John Williams uses Rogers or ATC studio monitors of very modest dimensions to amplify his classical guitar in larger venues. These applications make sense in that the guitar requires a very wide band width of 70Hz to 15Khz and superb transient response in order to reproduce the instrument's highly complex harmonic content and staggering dynamic range. Unfortunately, a lot of guitar speakers and P.A. monitors are tone generators rather than accurate reproducers of the signal they are sent. Anyone out there who's interested should look into trying good quality interconnect and loudspeaker cableing as well. You may be amazed at the difference good wire and connectors can make to your sound. End of Rant.