I've got a Mainland tenor in mahogany. I really like it. I also just got a solid body soprano Eleuke Peanut electric uke. That one is destined for my office so I can play it unplugged during my lunch hour without bothering my neighbors.
For a good chord reference, I just got the Ukulele Chord Bible by Tobe Richards. It's a very good chord encylopedia. If you need to know the difference between a BbMaj7-5 vs a BbMaj7+5, it's in there.