I'm going to buy a bridge/neck Pearly Gates set today or tomorrow. I've been thinking about this for weeks now, but I don't feel I'm any closer to choosing between nickel covered or non-covered. I'm hoping for some last minute opinions or advice on this. Asthetically I like the nickel, but overall tone is more important. I've never had a covered p-up before to make a judgement call. How much of a difference is there?