Jelly hash at Birdys has some if the best reviews. Before I went I figured I'd only try one has and after searching and reading tons of reviews I got the feeling Jelly hash was everyones personal favorite. Sadly the train to Haarlem was out of service and I only had enough time/energy to sample greenery. When I go back it will be my first visit.
The Trans Himalayan from Kadinsky was the best hash I have had in Amsterdam. It was melty and spicy. Bubbled like mad and left only a fine white residue. It also hit very hard. I wish I had bought more. Also the Caramello at Dampkring was excellent. Also very soft and melty. A nice tan / red colour to it. The GranDaddy Full Melt from Bushdoctors was extremely strong when I had that in Feb. But also rather harsh. Tangerine Nectar was also a very good isolator. Bit pricey but I only got a half G for a taster. Kadinsky's hash menu is extensive and I recommend checking them out if you want great hash.
The Tidighin at Babylon was the best Moroccan Hash I sampled when I was there last fall, and I've seen good reviews of the Super Babylon and Kristal there as well.
For black hash, the best I found was the Kashmir at de Graal.
If it's fresh and supple the Chocolata from Paradox is one of my faves, their Turkish hash is normally very nice as well. nice prices and the best milkshakes in town as well.
@flybynite: can you recommend some good leb in haarlem?
ive read that you can also buy red leb in leeuwarden. i don´t know the shop in the moment. did anybody try rde lebenase hash in leeuwarden?