Hi Jim, I get a bit fed up of people going on about differences in low light performance, The fact is there is virtually no difference whatsoever, So why don't we just get on with taking pictures?
Professionals don't worry about ISO performance, they just sell their pictures, job done......... Period
Only amutures worry about specs! It's all b.s.
After 25 years in the wedding industry I get tired of the same old arguments day after day. I started off with a tlr camera and 400 ISO maximum film, so low light discussions is of no interest to me anymore, I leave that to people who don't take photography seriously.
Modern cameras, and modern sensors are far more capable than the people who operate them, the sooner we all realise that the better.
Here's a thought, ...... If the pictures you take aren't good enough, Is it your cameras fault, or yours ?