Very few drummers argue that Ringo was a shitty drummer, and those that do tend to be obsessed with technique rather than music. His shuffles are perfect, and his fills -- especially during the Beatles' psychedelic era -- are melodic and inventive. Imagine any other drummer playing on A Day in the Life or Strawberry Fields Forever; neither song would be anywhere near as good.
Still, I would love to hear Keith Moon on Helter Skelter.
I agree with Morgan and Albert. My dad is a professional drummer, and one time I was playing him some early Pink Floyd, and he commented that Nick Mason was copying Starr's fills. I wouldn't have noticed that. But it made me think that his drumming is very memorable despite not being showboaty.
Still, I would love to hear Keith Moon on Helter Skelter.