Thanks everyone for your input, but my concern is not with the guitar but with the pickup. Here's an example of Esonic problems described on a Gibson forum:
"I've had an Epiphone AJ-500RE for almost a month now and have had it well set up in that time. I'm impressed with the build quality of the guitar itself as well as with the tone. It's a lovely guitar. There seems to be a problem with the eSonic2 pick-up system though. Like many on the forum, I'm getting a mains type grounding buzz at times... it seems to happen when I'm playing the bass strings very heavily and the buzz just cuts in. Sometimes it just goes away quickly and at other times it stays. When it stays it goes away temporarily when I touch the strings so it would seem to be some kind of grounding problem. So far I've just used the middle end-pin jack that should be providing the blended signal. Even when there is no buzz, there is such a low signal from the Mag pick-up and it's hard to blend the two together successfully. If I slide the blend right over to the Mag pick-up there is very little signal then I only have to slide it over towards the other side a little and the bridge pick-up comes in very loudly and I can hardly hear the Mag pick-up."
The esonic system is about 10 times more advanced than the simple but problem free pickup on my cheapo Applause (no battery required and just two faders, one for tone and one for volume). IF I ever got the money, I was thinking I could buy an acoustic Masterbilt and then add some kind of simple pickup on my own. Any thoughts?
p.s. Naolager, I've tired some Recording Kings and think they are very nice, it's just that I like the feel, style, and sound of the Masterbilt Jumbo best.