I've been using them. Nothing gets lost. But same with JAC the charges are expensive and they tend to do volume weight. I noticed most air parcels get to you in 10-14 days.
If you can wait 2 weeks why not try shipping by sea. It takes 30 days but price is a fraction of air freight. Pinoyboxdelivery.com can consolidate multiple packages from different sellers in a balikbayan box.