I would go with the R-75 because it has more tools to help dig out
signals.
The ICOM will be more difficult for a newbie to learn but things like
RF gain, pass band, and noise blankers can be very helpful.
If you need good audio get an external speaker or a garage sale
boom box with a few short wave bands on it. Some of them sound better
than the S-800 on strong signals and usually cost under $10.00.
People get rid of them because the tape player no longer works.
Bob