I moved a piano once.
I'll never do it again.
Ditto
Twice, but I am a slow learner. Never a grand piano, just uprights. For them you want a piano dolley, strong planks, strong friends, empty pick-me-up truck, furniture pads and
lots of beer.(Hint: Do not drink beer first)
If ever called on to move another piano I would break it into small pieces first.
Moving company? Never for a piano but for antiques and also regular houshold goods. Just give them your wallet too, you won't need it anymore.

( actually both were pretty reasonable, used a national company, Mayflower IIRC)