Royal 10 amp Drop-in motor...
I believe the 10 amp Drop-in motor is the most powerful motor Royal makes. I own a Royal Everlast 8300 with the 10 amp Drop-in motor and it is plenty powerful and also plenty loud as well.
My Royal Everlast deep cleans carpet better than my Kirby Sentria. I cannot imagine that the Royal Everlast would deep clean any better if it had a 12 amp motor.
