ABF was the cheapest I found when we moved last year. We moved a shorter distance (5 hr drive) but more stuff (new to us house is 3br plus half of the basement is fully finished). I looked at full-service movers, at combining rented trucks with local packers and/or friends&relatives, etc. and ABF was the cheapest we found for our amount of stuff & what we wanted them to do (we used some of their packing and loading services too through the U-Pack side of the business). Their customer support was great and the drivers were friendly and professional.
The local company that U-Pack hired to do our packing was the only mildly weak link (the local company underestimated how much time it would take, and by the time they realized they needed more time that company didn't have any crews free for us, and so another company finished the packing).
U-Pack scheduled our drop-offs & pick-ups to allow for extra time if needed ahead of departure day and even managed to accelerate our delivery time (without our paying the upcharge for faster guaranteed transit time) to smooth unpacking ahead of a holiday weekend. I think it did help that we lived very close to ABF depots on both ends of our moves.
Boxes & packing material - if you don't have too much stuff then boxes from a local liquor store may work great for you. If you need lots of boxes or need particular sizes, I found that you can buy in bulk packs from U-line very reasonably (but shipping can be a lot relative to the purchase price, so unless you need several bulk packs this may not make sense...). Boxes for large TV's and artwork seemed particularly pricey at most local options (U-haul or packing companies) vs. U-line prices. There may be other as good/better box purchase options, I didn't research boxes quite as thoroughly as movers (for boxes I checked local & 2 or 3 online sources).
For packing paper, I mostly used leftover architectural plans from an old project - if you have a lot of things to wrap (dishes, glasses) it might be worth asking local engineering/architecture firms if they have any plans that would otherwise be trash/recycling that you can have for free.
Nothing like a move to convince me to embrace minimalism more thoroughly