Generally a more powerful amp brings higher/cleaner output, but generally the same quality, altho tube amps could be a bit different from solid state amps for one somewhat known possible difference. The question is more how much headroom do you need (or think you want) for peaks over average spl at your listening position? Have you tried using an
spl calculator like this to get an idea of your needs?
FWIW kingnoob doesn't have a great grasp on a lot....I unignore him when he starts giving advice....it's often not helpful.