it's pretty hard to go on the cheap on a tow rig. The initial cost might be lower, but in case you have to replace stuff constantly:
1. it might leave you stranded when you need it the most (heck, it still happened to me 2 weeks ago when a tranny line blew off
)
2. it'll end up costing more in the end to gain reliability
BTW: either the links are dead or the rigs sold, since both of them don't work (for me)