Thanks Guys

I've seen posts re 4:3 before and they always seem to go off on a bit of a tangent!

Am I correct in assuming that Oly have committed to 4:3 and that in essence the physical dimensions of the sensor cannot change? In other words, are they relying on improved technology to increase sensitivity and therefore quality in the future?

My only other concern is that the Oly dslr range seems quite small compared to either Canon or Nikon. Are there any rumours re a model in between the 520 and the E3?

Is the twin lens option with the e520 a good option (I suspect from a pricing point of view that it is) or can you guys recommend lens' from other manufacturers? Given my shooting preferences I would need wide angle and reasonable telephoto. I should also mention that low light shooting is important for me.