I just put a permanantly mounted one on my GQ and it is so easy.
I thought about maybe getting a portable one but then when you think that you need the truck there anyway and it still needs to be running.... why not just mount it in the car.
Less components and less to carry in the truck. The case for the little ripper looks reasonably bulky.
What are they worth new????? I got my glind from head store in Bribie Is.
Only about 20Min from my place.
They all do about the same job. Glind has the patent on the original units so all others are really just a copy with slight variations maybe.
I know the Mcpauls one has less bolts holding the two outer housings together plus a few other things. I have also seen a twine unit that had failed due to the baffle inside it (made of copper) vibrating against the outer case and putting a hole in it. (caused motor damage due to overheat). I am sure there are horror stories for every unit out!!!
Ya wont go wrong I reckon either way they will both be an bonus out in the bush/beach wherever
Cheers
Brian