Hi All, I'm new to boar hunting and I'd like to start by buying the right stuff for night sorties. Any negative points about the q14 640, to be used for head-mount navigation by foot? Should I go for the 60Hz or save 1k and go for 30Hz? I know the new q14 640 boson will come out beginning of 2018 at $4k, but I wouldn't mind to purchase an "old" Q14 640 for around the same amount (including head mount and accessories). Which accessories would you recommend as a must? I heard the unit has image quality problems during the first few minutes until it warms up: is that common to all Q14?