I give top marks to PAs that are CLEAR and include a little originality without overcooking it. I recently congratulated an SN Brussels Airlines F/A for just this. His delivery in French, Dutch and English was outstandingly clear and at a speed that other foreign nationals would have had no problem following. His were the clearest (F/A) PAs Id ever heard in 48 years of flying.
Attention Captains: If you want to give me your name than don't rush or mumble it but please state it clearly. Otherwise don't bother!