I have two Maccaferri Islander plastic ukes from the '50s, a soprano and the much rarer baritone. They both sound really great, and play very nicely. The baritone, particularly, has a great tone. I've never had a Harmony, but have wanted one for a long time. Actually, I have a pretty interesting one on the way from an eBay purchase. It's the green one with the canoe and trees stenciled on it. I got it for $62, and there is an identical one listed on Elderly's site for $250. I've played a couple in antique stores, but that was before I started playing much (I bought a cheap-o uke a few years before I really started playing). They seemed over-built and heavy. From what I've read though, some of the older ones were pretty good instruments. I don't expect much out of the one I just bought, but it: a) was pretty cheap for a vintage uke; and b) is GREEN!