So, I've been shopping revolvers, and I was wondering something. Are the M&P revolvers worth the extra money? They're quite a bit more than a 642 or a Bodyguard and was wondering why. I understand they're made of different materials, the sights might be better, etc., but is there any point of diminishing return, so to speak for a revolver? Forgive me if this is a stupid question, but I'm just trying to work out a plan for purchasing my next gun, and this info would be helpful in sorting out the possible candidates.