For a geared head I use a Majestic model 1600. I found it at Quality Camera Company in Atlanta -- http://www.qualitycamera.com -- but these show up on eBay regularly. Yo ucan different size platforms from about 3 x 4 inches up to about 5x7 inch. Much heavier duty and heavier than the heaviest duty Manfrotto heads, at least as precise, and a cheaper as well. Only the fore-and-aft tilt is geared, the lateral tilt is not but for my panoramic and studio work that is fine.
