Are they cheaper/lousier on lower end models (RG 500 and down) than on higher end guitars (RG 550 and up)??
The reason I'm asking is that the neck on my 5 year old 450ex has become totaly screwed up!! Possibly beacause of the temperature changes here (I live in Norway). It looks like a spiral now

Intonation is of course totaly off. Unplayable!!
Will a 550 neck handle the temperature changes better??
Again, excuse my poor english..