I'm leaning toward the West Mountain ClearSpeech speaker
The best thing for you to do is to get some experience with the IC 7300.
FIRST!
Then you will know what its capabilities are and how it sounds under a variety of conditions.
Noise, interference from other stations, mode (CW, SSB, etc.), will all be relevant.
Your own auditory acuity and preferences will be important.
When you have a few months' operating experience an hour reading reviews is likely to be meaningful.
As has been pointed out a speaker with processing makes little sense.
I'd invest first in headphones.