perhaps you can advise if my comment at 23 is accurate from the standpoint of a Dutch expert? LOL
The Dutch are strongly biased toward "botanical" styles that are light on the juniper and strong on other natural ingredients, and they do use high-quality neutral spirits as a base (vodka is made from the same, but with much more subtle flavoring added). For this reason, high-quality dutch gins tend to be both rich in flavor and very smooth (Van Gogh Gin is a canonical example of the Dutch style you can get in the US) since the juniper berries can impart quite a bit of harshness. The style of gin known as "Genever" found in places like Belgium and Germany, is the polar opposite of the popular Dutch style and sufficiently harsh that few people actually drink it.
UK gins have a number of distinct and refined sub-styles, most famously London Dry. These have more juniper and less other stuff, giving them that distinctive sharp clean taste in better variants. I tend to drink a lot of the London Dry myself because the spirit tends to be pretty smooth despite the juniper bite. The brits also make some somewhat popular sweet gin styles that I find repulsive.
A dutch acquaintance of my youth used to disparage the American gins.
While I have tried many American gins, the quality is frankly inferior to the imports for the money. The severe restrictions on owning and operating a distillery in the US make it very difficult to break into an established market already dominated by the Europeans.
I personally tend to drink Old Raj (London Dry), Van Gogh (Dutch), or Hendrick's (Scottish botanical) depending on the mood -- never mixed, always neat. It is a lot easier to find good gin in the US than it used to be even six or seven years ago.