Grilles or No Grilles

I've always found that 'no grilles' leads to a more accurate listening experience. I've had many different speakers using many different grille cloth and components and always, no grilles works better for me. Often many of my friends find that a WAF means grilles on. What do you think?
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I had paradigm 60v2's and now the v5's,to me they sound better with the grills off.
Some loudspeakers are designed for listening with grilles on some with grilles off. Ask your manufacturer.
Grilles on. My Triad speakers are designed that way. The ESP speakers don't have a removable grille. I prefer the look of the N802 with the grilles and have made choices of set up and cabling so configured to sound best (to me) with the grilles in place.