Amp is a pretty cool station, even though they've added some stuff to the playlist now that I don't care for. Yes, word of mouth does make a difference - as while I was in L.A, I was telling people about Amp who never knew about it and they loved it. I also preset it in some people's cars, using it to replace one of the stations they already had there.
I love how Amp is on the new music, but at the same time, KIIS and KZZP pretty much are too. Our KZZP in Phoenix is good, however, I hate this thing where they want to play a bunch of recurrents, which is what our KZON has started doing as well. I love the hour blocks of no commercials on KZZP and 18 jamz in a row on KZON. Not sure if both stations having hour blocks of no commercials are related- after all, our Kiss FM has already been doing that for a long time. Not sure about the KIIS in Cali though - in that case, that may be a result to KAMP, but here they've been doing it for a while.
Good luck with KIIS and KAMP. Our KZON (101.5 JamZ) has already surpassed our KZZP (104.7 Kiss FM) once in ratings.... and I'm sure KAMP can also do the same to KIIS! It's only a matter of time...