I'm a little stumped on the string issue right now, to be honest. I love the feel of flats, and the reduction of string noise, but I also like to be able to dial an aggressive tone with presence in a heavy rock band. The Ernie Ball Cobalt flats seem to really be my favourite strings for these purposes, and if there was anything sort of similar to those that Payson makes I would jump on that.
I guess I would also opt for something with less floppiness so as to avoid any banging on the pickups.
Which of your sets would you recommend? Are any of your flats a little on the brighter side like the cobalts, or would the reduced cores be better?