Chiff and Fipple Forums

For those wondering about what country I live in, I am in the U.S. Specificaly: Georgia, where average temperature is (unfortunately) much higher than it is in Europe. The aluminium Dixon seems like it is probably the best option, because it is more like higher-end whistles like the Burke or MK, but...

I would like to get a tuneable Low D, and I can't decide between a Susato and a Dixon, both of which look like the best I can get at my price range. Which would the experienced whistle players here recommend, and if you reccomend a Dixon, which is better: the metal or plastic?