selling m9 or upgrade to m9p to sell. l My gray m9 looks not so great I am thinking of selling for around 4500 it is low shutter under 7000 but lots of wear and straches on the lcd I can get the upgrade at a discount long story but can do it at 1600 should I or just try to sell for 4500 or upgraded for 6100 thoughts? thanks davidPS the camera is out of warranty