Alan I work both 160 metres and 600 metres and find both similar. Daytime range and night time similar. but you must compare like with like power and antenna wise. I use a 1/4 wave inv L on each band
Laurence I am on the East coast near the sea and both 160/600 are similar. I suppose at other locations things might be different although when I have been elswhere I have never noticed that the top