1: The 7300 is mature and stable, with easy-to-use operation. This one is perfect.
2: The FT-991A covers both shortwave and UV bands, although the spectrum is a bit... well, it's not ideal.
3: The IC-705 is a good option, as it's portable and supports multiple frequency bands. However, the price isn't very favorable at the moment. For someone who already has a 100W shortwave radio, the 705 would be a good second device to have.
4: The FT-710, a new model, is obviously inferior to the IC-7300, which has been on sale for many years and has sales exceeding 10,000 units.
5: FT-DX10 hybrid architecture, for the same reason as 4.
6: The XieGu G90 is a good option if you're just trying it out. You don't need to spend too much money, and models costing around $2,000 can meet basic needs. It also has a spectrum analyzer.
7: G106C has a simple spectrum display, but I don't recommend it. Although it's cheap, the speaker quality is very poor. It might be okay for casual CW operation on the go.