No experience with the TS, but I opted for the double after a lot of thought. Coming from a single pin I wanted a second for a quick follow up shot or if the situation changed while hunting. I find myself using the second pin rarely while practicing, and I'm definitely shooting tighter groups with the top pin. The advantage of adjustable sliders is the precision for that first pin and consistent sight picture, so a second and third pin should just be auxilary IMO. Given the chance I would adjust my top pin over using my 2nd pin every time. I figure if the situation changes so radically while hunting that I would need the 3rd pin, I should let down and restart my shot process or not take it at all. I think the 3rd pin just adds unnecessary complexity, and I personally find the only scenario it makes sense for me is taking shots beyond 100 yards where my arrow won't clear my sight. My set up allows me to take shots up to 100 with the second pin, and I think that's plenty.