I don't know about the Yaesu radios, but I also have an IC-7300 and it's a great data radio for the following reasons:
1. Being fully SDR, the audio response is completely flat on data modes, radios with roofing filters usually have "humps" in the passband caused by the filter characteristics. There is no change to the level on TX whether you pick a low audio frequency, or a high one, on modes such as FT8.
2. While not really an issue with the slow turn around of VARA, for faster data modes the very low latency through the IC-7300 helps significantly for Amtor and Pactor. The latency measured through my IC-7300 is 3 to 4 milliseconds on both TX and RX, that is one of the fastest SDR radios around. Rob Sherwood measured similar figures.
3. The IC-7300 is easy to interface to VARA or external modems.
4. On high duty cycle modes it runs very cool.
Unfortunately, like most current Japanese radios, the IC-7300 also has a lousy lithium ion 1mAh surface mount clock battery that will eventually fail and is awkward to replace.
73 Dave
G4AON