looking to get one of the above and can anyway tell me what is the difference between them?

i see both have good ram and speed, all i can see is one had pic in pic? or am i wrong?

how are people finding them? tricks? tips?

also can only seem to find them for £315 on ebay been told can be got for £279 but cant see it

do they support 3d? streaming? easy to put images on? cccam? record one watch one? epg?