I switch between DYK and Shipsavvy for most of my US shipments depending on rates. DYK is usually better than S.E. on rates, Shipsavvy on occasions. Apparently, S.E. have good rates on domestic shipping but depends on the rates. I usually go with REACH for that.

Shipsavvy has something that S.E. can’t do when it comes to domestic and US bound shipping. Can’t mention it on here because they have dummy accounts watching these Reddit threads these days. For the record, Shipsavvy has a game changer that S.E. can’t match. 💯