Here is a very good article by Gorge Fly Shop comparing Sage Trout Spey vs Winston Micro Spey. For those intending to make the foray into the small switch rod arena (2wt - 4wt), this is a good read.
http://www.gorgeflyshops.blogspot.sg/2016/04/winston-microspey-vs-sage-trout-spey.html