This looks like it could be a great optionThe Revic FH1 is an awesome head. Here is a link and there would be a special Rokslide price
I'll second the Outdoorsman's Fluid Head. I have one and love it. It is worth the weight penalty (But the wallet penalty wasn't fun).Outdoorsman’s Fluid Head is far better for big glass than the VA-5. VA works but the Fluid Head is much better. I have and use both and if weight isn’t an issue I’d use the OD Fluid over the VA every time.
Another that works well for a lower cost is a Manfrotto MVH500AH Fluid Head. It isn't ARCA but if converted with a Kirk ARCA kit it is and makes for a really nice setup.