I have been replacing my pneumatic Winter vario with a Sage (56mm). Its needle agility is good to find small thermal, but he thing is it's behavior is in no way quantative, and it is almost unsensitive to sink so that not really usable for speed to fly (in case on flat battery).
So, with the use of a large syringe, I did some comparative studies of Sage vario & winter, with various configuration of restrictions installed on tubes. Here is the result.
