Mice are a very subjective and personal thing. My suggestion, find yourself a good old bricks and mortar computer shop which stocks a few and try them out.
I have a logitech g500s and love it, but it might not suit you.
One more snippet of advice for what it's worth, don't get too caught up with specs, have you ever used a mouse set on 8200dpi? It's freakishly sensitive and nigh unplayable for most of us mere mortals! Maybe you're a pro gamer with insane reflexes, in which case good luck to you, but ultra-high dpi for most (myself very much included) is a nonsense line on a spec sheet.