I used Fuji Superia 400 in Prague recently. It was very dull and overcast but 400 seemed to cover all situations. The daytime prints were only OK but this was probably an accurate reflection of the reality due to the weather. However I was particularly impressed with the vibrancy of the prints obtained from night shots of illuminated buildings. All were hand held and really exposures were beyond the ideal for hand-held shots but using lamposts and benches seemed to give the stability needed.