Sony Noise

Hi All

I am currently trying to decide between an X-e1 and a Nex 6. In the future, I'd also like to be a fast DSLR for wildlife. There is no doubt about it, I just love Sony's ergonomics. That sunken grip is beautiful. Canon comes close to it. Nikon is miles away for me.

I also absolutely love their EVFs, I think they are beautiful. When I look through a D7000, it seems rubbish my contrast. I admit, however, that the viewfinders are nice in Canon's fullframe models.

But anyway, the point of this rambling is that, a big draw of the Nex will be I can use Sony lens on it. In particular I have my eye on the Zeiss portrait lenses. My only concern with planning to get a Sony DSLR in the future is the noise issue due to the light lost in the SLT. Even in the A99, compared to the 5dm3 it appears significant on DXOmark.

Can anyone alleviate my fears?

Thanks!