Kim's Valk has had the "crickets" sound from the front brakes since we got it at 13,000 miles. The rotors are OE but I'm sure due to the lack of "cricket" sound from the brakes on my Valk {w/OE pads} I figured her pads are not. Recently the "cricket' sound became MUCH more pronounced & the bike was hard to push around. I bled the brakes {which it needed badly, dirty fluid} & it got slightly better. Not satisfied I disassembled the LH front caliper & found nasty gummed up pistons with a bunch of crud around the seals. Simply cleaned the pistons with 2000 grit sandpaper & carefully cleaned the seal area of the caliper with my fingernail. Cleaned & sanded down the pads then reassembled & bled it out... no more problems & the "crickets" were much quieter too. Obviously the LH caliper was not releasing fully.
As far as the "warped rotor sound" my '97 has done that since I got it nearly 40,000 miles ago. It has been my experience that OE Honda pads are by far the quietest on OE rotors. I have had OE Honda, EBC, & SBS pads of the front of my Valk. All stopped equally well.
Keep on lookin' you'll find the cause.
