I find scanning positives far easier than scanning negatives, because you can already see what color the scan should have. When I bought my last Velvia 50, it was less expensive than Portra 160. Over here it was 45 euros for 10 sheets of portra and 77 for 20 sheets of velvia. Slides don't work for every subject, but if you have a shot where you can control contrast, Velvia still rules for me.