mines on 7900 mate, all those under are just wimps ( yeh im prepared to get flammed it is SAU ) My 20 is even higher =)
whilst sliding wether power drops off or not you need revs, and like you said higher rev so next gear is up in sweet spot whilst changin.
i have power fc and can change this myself when ever i want, so speakin from experience 7 does not cut it.
Better to have it higher rather than too low and not be happy and pay again to get it changed with nisstune !