Gonna say upfront I'm NOT a gun person, my brother's the real expert (1st Lieutenant USMC)
That said I bought a Smith & Wesson .500 recently per my brother's advice and highly, highly, highly recommend it. It's definitely not a good weapon to carry around on a daily basis. But it's so damn fun to shoot! And Rick from Walking Dead uses one, so we know it's effective against zombies. Win/Win!
EDIT: Not a pic of my actual gun, but this is what it looks like:
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You definitely aren't a gun guy because Rick in "The Walking Dead" uses a .357 Colt Python.
My buddy has a S&W .500 and I've shot it before. Can't say it's very practical unless you're being chased by a T-Rex!
i may just have to get a highpoint to have something new to shoot.