I've been pondering the same question lately, as I've got about 3000 linear feet to run soon.. I've done some price comparisons between woven wire and hi-tensile that have shocked me..
For your situation, 5 acres, if the parcel is square, would require 1867 linear feet of perimeter fence...
That's about $800 worth of woven wire in 330' rolls at $130+/- per roll.. Setting one wood post for every two metal posts, all on 8' centers, you get 78 wooden line posts and 156 t-posts.. 5" wood posts cost about $7.50 here, and t-posts are I think about $4.. That's $1200 for posts.. You're already at $2000, and we'll forget about corner braces, staples, etc for now..
With hi-tensilie, you could run 5 or 6 strands for the cost of 3 spools, or about $210... Setting 5" line posts 40' on center means buying around 50 wood posts, or about $375 worth... Your under $600.. Running 4 strands would put you closer to $500 than $600, too.. The braces, staples etc would be about the same, so it looks like hi-tensile could be 1/3 the cost or less of woven wire..
Then again, I'm neither a fence installer nor an accountant, so take all that with a big grain of salt and don't hold me to it.. :lol: