I just did a short write up on heights and stability on my website - its in the product description for RRS Soar Tripods:
Buy a RRS SOAR Tripod with RRS Anvil 30 ARC Carbon fiber tripod for competition shooting. We sell TVC-22i, TFCT-33, TFCT-34 & TFCT-34L.
www.bisontactical.com
Here is the Max height extended (which is what a lot of people look at):
Maximum Extended Height (including Anvil-30 head):
- 2 Leg Section (22i) — max height is 67 inches (5.6 feet)
- 3 Leg Section (33) — max height is 61 inches (5 feet)
- 4 Leg Section (34) — max height is 61 inches (5 feet)
- 4 Leg Section (34L) — max height is 71 inches (5.9 feet)
However I think max stable height is more useful, and I think the numbers are a bit surprising...
My maximum suggested height for stability:
- 2 Leg Section (22i) — max height full extended = 67 inches (5.6 feet)
- 3 Leg Section (33) — max height fully extended = 61 inches (5 feet)
- 4 Leg Section (34) — max height without the smallest legs extended = 42.7 inches (3.5 feet)
- 4 Leg Section Long (34L) — max height without the smallest legs extended = 49.7 inches (4.1 feet )
However the above is my ideas, what is stable for you might not be for someone else. I was surprised about the 22i being so tall compared to the others. I think it might be the most stable - but comes at the penalty of not very compact when stowed...
Your going to have to decide what is the most important feature out of - stability, compactness and max height...