I'm reluctant to say much, because I haven't actually played one, but here's what I do know.
The Meisterklasse is a top-end performance quality harmonica with a metal (specifically aluminum) comb. I don't remember if it is a cast aluminum or milled aluminum comb, though I'm fairly certain it's milled aluminum. The reed plates are the same as what are used in the Hohner Cross Harp and are replaceable. (A big savings considering the cost of the harp.) According to what I've heard the sound is brighter and louder than plastic, which is usually brighter and louder than wood. It's coverplates go all the way to the edge on all 4 sides, and they are only open on the front of the harp, allowing for good projection of sound and better response to fanning and improved responsiveness to bending. It is also supposed to be one of the most airtight harmonicas Hohner makes, but again, I don't know how true that actually is, though I would imagine it's a fairly accurate statement.
You can get them from Harp Depot for $60 + S&H.
[
www.harpdepot.com]
Is it worth the cost? Considering I don't think the Cross Harp is worth the difference in cost over the Pro Harp, I hesitate to say yes, but then again, It's construction is similar to the Golden Melody (except in shape) or the Suzuki ProMaster and BluesMaster, 2 of which (the Golden Melody & BluesMaster) I know for a fact are well worth their cost. You certainly wouldn't have to worry about the comb swelling, or breaking, and the reed plates are replaceable.