While shopping for a Flea, I discovered that Flea Market Music offers upgrades from the strings that come with Fleas and Flukes to Aquila nylgut ($7.95), Ko'olau gold ($7.95) or Hilo black nylon ($5.95) strings. I'm curious about whether to upgrade and, if so, which strings to use. So my questions to Flea and Fluke owners: Did you upgrade, either at the time of purchase or sometime after you got your Flea or Fluke? Did using different strings make your Flea or Fluke sound better (or worse)? Do some strings take better advantage of the sound properties of Fleas and Flukes than others? What strings are you using now on your Flea or Fluke and what do you like about them? I know that Flea and Fluke owners love to talk about their ukuleles (and after playing a Flea this weekend with factory-installed strings) I can see why, so please go nuts and share your Flea and Fluke string experiences. Thanks!