I've spent a lot of time on 25, 45, 55 and AB105. I find working on Rohn
tower to be much easier than working on 105 largely due to the horizontal
braces on all three sides of the Rohn all the way up. 25 is ok for smaller
stuff, but 45 and 55 with the wider spacing between legs is easier to deal
Having said that, 105 can frequently be obtained at better prices than 45
and 55 and is sturdy.
The other cosideration is construction. My group of cronies can stack 45 and
55 much faster than stick buidling 105.
If cost isn't a large consideration, I'd go with 55!
73 de Larry K7SV
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