I got these two cams and first I thought with this pricetag it wouldn't be useable on a miniquad because image and lighthandling must be "cheap". But 3 flights with the mini in difficult lighting convinced me. So definitivly a recommendation!
I would prefer the silver one - not really sure about the plastic. The pz0420h has infrared filter as accessory - maybe that and black as preference for anyone?
Weight about the same, air drag with silver is less, image quality should be a bit better with silver. SKY (silver one with 650TVL) PZ0420H (black plastic, 600TVL)