Well I'm not playing in a band setting yet but having grown use to my J, I thought a slim neck was the way to go. However, upon getting a cheaper P, i quickly grew to like the thicker neck. The body shape feels no different to me yet and I love the deep, thick sound that the P produces.
The jury's still out with me. Obviously my Fender J is a better made instrument so I'd need a HW1 P to do a favourable comparison but i do love them both.