Amsterdam's coffeeshops provide an excellent venue for a vacation. At this time, I would not even consider going to Colorado as it sounds rather restrictive from what i have heard.
Anyway, as many others, i have enjoyed vacationing in the Nederlands with its shops many times. One reason I have always told myself was to sample various varieties to determine whether to grow them for myself when I get home. This has not really worked out for me very well since I tend to get bored fast with anything but a good Haze. Hazes just work for me and my symptoms. So I will list coffeeshops that have consistently stocked good Hazes for others who have the same predilection as mine.
1. Katsu. Consistent offerings of superior Hazes. Starting back in the late '90's with their Nevil's, Katsu usually stocks at least one quality Haze.
2. City Hall. This shop is next door to the original Greenhouse Coffeeshop just off of Damstraat. Over the last few years they have had 5 Hazes on offer all for 11e. The Mango was really good here 6 months ago. The NL5 x Haze was a miss though for me.
3. Paradox. As with many shops they have carried a SSH for a long time and it is a good representation of the strain. I usually go for at least a gram whenever I am in town.
It is almost time to return to my favorite city and return with fresh reports of the good, bad, and ugly.