so far ive only popped my fuses on my 1500s once, it was about about 10 or 20 .25ohm burps.
But it sucked so bad trying to find some, they popped at about 8:50pm, stopped at walmart, and the biggest they had was 30. and all the autoparts stores were closed.
I do like the internal fusing just because its one less thing to wire up though, but ill go external for improvement,hahah