My daughter needed a ukulele for music class at school, so I ordered a soprano Flea for her and, while I was at it, a concert Fluke for me - natural finish, no fancy options. Both are superb instruments. Intonation, action, fit and finish... everything is perfect.
The smaller body of the Flea suits my daughter well, but I enjoy the bigger, more resonant tone of the Fluke - the difference is definitely noticeable. I have put some Worth strings on the Fluke (clear, hard, low-g) and they sound absolutely fantastic. The only bad thing I have to say about the Fluke is that now my Firefly isn't getting all the attention it used to. 8^)