First I'd replace 3 of your SM58's with SM57's, and add a MD421. The MXL603S's are bright sounding mic's, so I'd add a pair of MC-012's. The LDC... I've never used the NT1000 so I can't comment. The V67 is colser to being flatter than the C1 and the C1 is brighter sounding than the V67. Your MK319 is a drak sounding mic, and your KSM32 is pretty flat, and your B1 has a bumped up mid-high so it's on the brighter sounding side. So with that said you could add either the V67 or C1 to your collection and it's really up to you. Even tho I prefer the V67 over the C1... I would add the C1 to your collection, because the KSM32 pretty much covers your flat LDC mic, and IMO the B1 sucks on vocals... so I'd add the C1.