Parcel force are pretty quick, Most guitars (kind of an obvious shape) are done by the same guys and they all take pretty good care, I've done at least 50 guitars through PF in the last 2 years and not one problem, Some even just bubble wrapped and cardboard around it
Citylink - Ok(ish) had damage problems
Interlink - Lost 2 guitars
TNT - Costa fortune and took 3 weeks to go 50 miles
PF in my opinion are ok, there are better, I just have'nt found them yet
Good luck Nathan, and don't worry, Thousands of items go around the globe, Your unfortunate if something goes wrong
Rob