I don't think you should get a V8 just because that's the cool thing to do (though I put it that way) you need to get it because it is so much better. Sure you don't need that power but it's a great thing in a vehicle. I had a Firebird back in the day that was juiced up nicely and I've never enjoyed driving any vehicle as much as that one since then.

I'm not sure of the price difference between the two, but if it's reasonable and you can afford you really should get it.

Also, anyone I've known that's had the newer mustangs haven't complained about them. fyi