A58 questions

What do you guys think of the following :

buffer size ? The A37 fills up after 10 shots in jpeg and the A57 after 22 shots, what do you think of the A58 buffer size, also since it has to process larger files.

noise performance ? Sony says one stop improvement and they have finetuned their jpeg noise reduction, flat areas versus detail. Will it be better than A57 with the 16MP sensor?

I am pretty sure the AF will be excellent, just like the A37/A57/A77. So the above things are really important to me.

I own a A77 now and am thinking of buying the A58. Most important reason the 20MP sensor and improved jpegs.

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www.alex-digitalpics.be by Sony