After getting a chance finally to play with a healthy Fenix (mine had been damaged in shipping) the last couple of days, I decided to dedicate my Culture Vulture to it. Interestingly, when I tried one with a Serge a couple of years ago, I didn't really like the combo - it seemed to make the Serge sound a bit more brittle. Sometimes that was nice, but it didn't seem to enhance the sound that much to my ears. Of course, my memory might be flaky on this.....
But damn if it doesn't sound great with the Fenix. It just seems to give the sound a little more of an edge, but still retains the Fenix sound.
Wondering about other favorite combinations that people make as their setup default....