Had a few options come up for Camera's and CCD's (thanks to Lewis too

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Also looking at second hand 5DMK3 and 6D options.....
Have option for both at very good prices with low shutter counts (5DMK3 is 100k shutter though).
Supposedly the 6D has a better low light sensor that the 5DMK3 plus 6D has WIFI built in so no cable needed.
I dont really need all the magic AF Matrix of the 5D so what are peoples thoughts on either for my Mewlon 300? and this need??