Beautiful and well done photographs you have in your website.
I do landscape too with shooting at low ISO which I think is easier to get details on shadow.
I like the high ISO and agressive look for my street photographs. The shadow details are not that bad if I proper work on then. Here a example:
Theses shots are just test to see what I could get from pushing K400 at 3200.
By the way, they were shot with a roll of 35mm.