Years ago I settled on B&H. The majority of the advertisers in the photo mags charged confiscatory rates for shipping and handling (in the vicinity of $100). I found that B&H charged true USPS or UPS prices for shipping and handling. The fact that they were not cheating the customer on shipping and handling led me to believe that they were a reputable source for my photography purchases.
The Flam railway ride in Norway is great for scenery and waterfalls. Helsinki is a beautiful city with lots of photo opportunities.