I will be purchasing the canon 600 and really have no idea what tripod to purchase. Currently I have a Gitzo carbon twist-lock mono-pod that has worked very well.
Been looking at the Gitzo Leveling Mountainer......but do I even need a center post?
Feisol CT3371 tripod
w/optional leveling base
tripod: $319
leveling base: $79 optional
shipping to the US in about 4 business days: $46
approx total: $365-474
supports 26lbs
For the 600 I believe people use either a 5-series (the ultimate in load capacity, stiffness, and weight ) or a 3-series. The 5540LS and 3530LSV are the designations for the 3-segment versions, respectively.
The 3530LSV is $629 at B&H. If you want a less expensive Gitzo 3-series you might consider a used 1325 which lots of people utilized for their 600s before Gitzo's latest upgrades.
You might save a little money going with something different...in the end it will be about a break even. I've owned 4 gitzo tripods and lost A LOT less compared the wash I took on other companies mentioned.