For Europe mainly (but they also ship worldwide):
They have a huge programme (biggest in Europe), very fair prices, they are also very fast. Offer also an excellent service.
And what I really like: Despite of most other online distributors who just sell the stuff Fotoimpex has been very active in promoting traditional film photography and helping beginners. They also have a nice "brick and mortar" store in Berlin. It is real fun shopping there
And their profits are exclusively invested in their sister company Adox. Therefore the money goes to a real, fully dedicated film, photo paper and photo chemistry manufacturer. That is absolutely unique in the current market.
A good source for the outstanding Fuji Hunt E6 home kits is Retrocamera:
Doing E6 at home gives perfect quality, is very fast and extremely easy. And very cheap. I love it.