Well, hardware wise the Xbox ONE and PS4 seem to be practically identical, with the PS4 just slightly edging it - no surprise there.
Not a huge fan of the design, or the new controller. The current 360 controller is absolutely perfect - I don't see why they just don't stick with it.
PS3 is superior for its entertainment aspect, (i.e. movies and music).
True - blu-ray capabilities was a massive plus for the PS3. Thankfully they've added it with ONE.
Also, I think it's better for not having 6-year-old squeakers, and their exclusive games are much better.
You get annoying little kids on both platforms. And as for exclusives, that comes down to a matter of opinion.
Not sure which console I'll go for (if I go for any that is). ONE has so far displayed a far more multi-purpose and interactive system, where as the PS3 has adopted a purer gaming approach. Hopefully Microsoft will show off a lot more at E3.