Quote Originally Posted by HDNitehawk View Post
So how about this idea, wait till they are both in stock and load up and take a road trip to B&H. 4+ hour ride from where you are right? I think it would be a journey well spent.

Second idea, assuming Adorama has a wonderfull return policy like B&H. Buy the 600mm and if it is to heavy and long, send it back and get the 500mm. I would have suggested renting one from lensrental but the return idea is cheaper.
Good points, thanks, Rick! I do think a visit to the B&H Wonderland is in order - and it wouldn't even need to be the 4+ hour drive, since I fly into Newark 1-2 times per month for business (I'd just have to book a later return flight, rent a car and drive up there - I'd feel a little guilty telling the car service driver to take me to B&H and wait on the corporate dime ; actually, I think it would be easier to just take the train - it's a 30-minute run between EWR and Penn Station, and it's a short walk from there to B&H).

I did check out lensrentals, and my immediate reaction was that a 4-day rental cost would cover the 1.4x III teleconverter - that sort of thing is why I'm not a fan of renting a lens 'to try it out'.