Sounds like a good time to invest in one of those good carrying cases? Check out Brenthaven's website. I've had their backpack for 4 years now, and it is everything they say it is. An expense, sure, but you can use it over and over.
Or get just a nice padded sleeve, from Brenthaven or others, and use it in combination with other suggested methods (pro packing at Mailboxes, DIY bubblewrap...).
In our experience (a small business shipping 10-20 packages a week, including fragile items like china), FedEx Ground has been the worst - no, not breaking stuff, but misdelivering. Wherever possible, we use USPS, Priority Mail option. DHL is good for special needs stuff, like paintings, but you probably don't need it.
Good luck!