before i got my truck broken into i had a procomp. 3x30x30,00lb strap. it was in good condition after being used a lot(i liked to go offroading in my 5.4l excursion and more then once i did what two trucks couldn't do by myself). anyways i think it was about $80 at 4wheelparts. i believe that its better to splurge on the strap and be sure it will hold out then hope it holds out when you are stuck.
i also bought some shackles from the same place. been through the same crap and no problems. only around $20 a pop and i think they were rated for 10k.