Greenstar
ArboristSite Operative
i would recommend the la sportiva's but i am returning the second pair because of stitching letting go with only a couple months of wearing them.
I would not waste your money with anything with stitching. Get a full grain upper. For example, the fullgrain Asolo TPS 520 GV boot, or the Power matic GV boot (just saw them on EMS.com. Also look at these, look burly http://www.sierratradingpost.com/p/,83043_Asolo-Sasslong-Gore-Tex-Backpacking-Boots-For-Men.html
I like something like these that are fullgrain leather, no stitching because I can kick huge brush piles all day long as hard as I can, kick logs and branches, and my boots never fall apart.
By far the burliest boots ever, I have a pair of La Sportiva Makalus!! They took me about A YEAR to break in! But have lasted about six years now. The heavy vibram soles have now worn through, but the thick thick high quality leather is still fine. They fit me like a glove now too and are like nothing else I've ever worn. I'll hopefully get the soles replaced soon, because the stitching on my nice Scarpas are already getting freyed after only a week! and I dont want to ruin these good looking boots. I took them on the AT for three weeks!!
Good luck.
These ASOLO's are also top-notch though http://www.rei.com/product/694262
They wont last like my Makalus, but you'll get a few seasons out of them if you treat them when needed.