The Swan 1 Reborn has been my go to putter for going on 6 years now. I've always been using BT Hard Blue in 173 g. These are impossible to find nowadays, so I had to go with Blue burst. I find the burst discs uglier and also a tad less understable and would love to find non-burst discs again.
Still it's my putter of choice and great for turnover upshots both back- and forehand.
The Swan is without a doubt my favorite putter. I don't like putting too hard and find that most other putters fade a lot. It can be used for short approach shots with some hyzer but if you try to go over 40m it's too flippy.