I got the fury’s despite being a lifelong Swarovski owner. When my Swarovski rangefinder monocular broke I was told to send it back, but got them returned untouched with an apology letter saying they couldn’t repair. It was from that point on, a paperweight.
I went vortex with the whole once bitten twice shy mentality, the warranty is unrivalled. The fury’s (as I understand the same glass as viper?) are absolutely excellent, certainly good enough for the job. The rangefinder really seals the deal, for the money I think an excellent choice. I’m sure Swarovski are better but not proportional to the extra £.