Ok, I had decided on my lens line-up. It was going to be:
1. Sigma 20mm f1.8
2. Sigma 24-70 f2.8
3. Sigma 100-300 f4
A good solid lineup that covered the entire focal length range and interestingly standardised my filter needs (all 82mm). But Sigma let me down. I searched and I searched and I couldnt find the 100-300 anywhere. Finally I ordered it from adorama becausse they thought they could get one out of Sigma with a definite order - but no luck. 5 weeks of waiting and nothing - Sigma just couldnt be bothered.
So thats it. The order is cancelled, Sigma has been benched and I'm now going to buy the Carl Zeiss 16-80. Sorry Siggy, you had your chance.