Pretty much in the same boat as most people here. I've had my Fluke for seven years, and side-by-side it is definitely not as bright or loud as a Mainland or Ohana ukulele. But the truth is, I play my Fluke a lot more often than anything else just because it is always there. It's standing up right next to my computer as I type this. If I knock it over, I don't even blink and I don't have to worry about dinging it or scratching the finish. If you like the brighter sound, I've found that Aquilas produced the loudest and brightest tone out of my Fluke. But if by chance you like your ukes to be even brighter than that, you'd most likely be better off with something else (but be sure to buy a stand or wall hanger if you plan to play it a lot!).
Overall, Flukes are reliable, durable, stay in tune, and well intonated all the way up. They're reasonably priced and made in the USA. There are a lot of ukes that sound better than the Fluke, but as long as you're having fun, it's all good.