For me, at my level E3 or E30 with 12-60mm SWD, 70-300 ED or the 50-200 f/2.8 probably would be enough.
I don't think that 70-300 will be same sharp on my E500, because of the sensor. But I hope that this summer I'll have my new E30 (or E3).
And yes, Zuiko lens are one of the best.

Indeed, D700 is amazing, and D3 or D3X is ... can't find the words

But, let's not forget the hand and the eye who handle the camera
Great job !