Thank you Peter. Just found out I'll be in NYC the early part of December and will go by B&H and check out the various heads. No need to rush at this point and it gives the credit card time to cool off.
In regards to the Gitzo Systematic head, the engineer in me likes the low center of gravity the Systematic head has in this tripod. The ball is roughly centered in the tripod's ring-clamp. I "feel" as though that would add to the stability of the overall system. I will admit the controls of the Gitzo appear rather convoluted, at least in the video I watched. The quick release is Arca compatible though and I'll bring a few plates to test.
The current price at B&H is $490 and subtracting the $150 rebate gets the price down to $340. I suppose it could be lowered further by selling the series 5 adapter ring included with the head - maybe another $40ish. So a $300 head when all is said and done.
Lastly, I called the rebate number posted above by jnswcd. The rebate can be claimed multiple times.