USPS has the best deals on shippIng to Hawaii. UPS/FedEx is a ripoff when it comes to Hawaii shipping, they charge you an arm and a leg for 2nd day air for even the smallest of packages. (which does not come in 2 days BTW)
All carriers will have good and bad.
I recently purchased a scope from the ML, insured and tracked through USPS.
Anyway, the box had a huge gash in it, and upon inspection of the scope, the sunshade looked to have jumped some threads.

So I went back to the PO to inquire about the claim. Long story short, there are so many hoops to jump through, I decided to remove the sunshade and run the scope as is. (I wasn't goin to use the sun shade anyway)
Well the point to all this is that even though USPS isn't the greatest, I'd still rather ship through them than FEDUPS any day.