I do FIH and Half-Windsors mostly, just for the sake of variation. It actually has to do with how the tie knots and what kind of collar I'm wearing, but I mostly vary between these two. Every now and then I try a double FIH.
The first knot I learned was a half-windsor, which I've never liked. Before SF I always tied a Windsor, but then through WAYWRN I fell for the double FIH, which is almost all I wear now. Sometimes if a tie is too thick or something I'll wear just a FIH.
On the odd occasion that I want a slightly larger more triangular knot I tend to use the Pratt instead of the Windsor, because having adapted to the DFIH I just find a windsor too damn big for any of my collars and the pratt makes a better dimple.
Please tell me. Living and working in London, UK I wouldn't go so far as to say that it is the exclusive tie knot, but it is the most common one and one that I wear, especially with spread-collared shirts.
I have seen so many comments of late where new posters are posting pics, and they are slammed immediately because they have ties a windsor and not a FIH. And not always told in a gentle way, but pretty aggressive sometimes.
I have a feeling that the responses will be in the region of 95% against the 'windsor'.
It's just too bulky, particularly for ties with a heavy hand. Four in hand for me, or half windsor if I'm feeling crazy.
I almost always tie a four-in-hand, unless my tie is really heavy and I might tie a small knot. I like the look of a small, narrow four-in-hand knot with wide spread collar, as exemplified by HRH Prince Charles. I prefer to follow the royalty and wear four-in-hand knot. If I ever desire to tie a larger knot I'll use a double four-in-hand. I prefer the longer shape of a four-in-hand knot over the Windsor knot. However, sometimes I might use a Windsor knot on a knit tie. A four-in-hand knot often turns out lumpy with a knit tie. I was convinced that it can look good after seeing Pierce Brosnan tie a knit in a small, tight Full Windsor knot in the 5th episode of Remington Steele.
I tend to wear a St. Andrews Knot. I like starting backwards.
I just learned that knot today - and it's awesome. I'm finding that with the exception of the double-wrapped FIH, all the knots I like start backwards. But for some reason I'm doing that double-wrapped FIH a lot. (What's that called, anyway?) It seems to fit with my collars and choice of tie.