Hi - I'm in the market for a 32" or 37" Samsung 6 Series TV, I'm a bit confused about the difference between versions - is the ES6540 any different from the ES6710, apart from the colour (the ES6710 is white, the ES6540 grey/black)? The ES6540 seems to have been released later, so I was wondering if it has any improvements, though the specs seem identical. I'm also considering the ES6800 as a possibility, I understand this is dual-core and has a slightly different bezel (silver?), but am not sure a) if dual is worth it on a 32" or 37" screen and b) whether there are any other differences. Could anyone help to clarify? Thanks!