ZJS: this is my fist roll of slide so I'm not in a position to comment on the difference between Velvia and Provia. My gut feeling is that you will probably get more saturation from Velvia so green will be greener. 
TheOneAndOnly: I bought the film at Galaxy Camera downtown with developing included. Total price about $19 tax included. Henrys seems to be more expensive. Alternatively, try buying films from Ebay or online ...

TheOneAndOnly: I bought the film at Galaxy Camera downtown with developing included. Total price about $19 tax included. Henrys seems to be more expensive. Alternatively, try buying films from Ebay or online ...