Is it worth it to you is the question. I have them both and I enjoy them both.
The Razor is a tank and I run it in my match rifle where it takes dings, bumps and scrapes.
The Vioer stays in my Vudoo build but I would run it in matches too.
If you want the toughest you can get then Razor. If your ok with slightly less durable turrets get the Viper.
With the prices of razors going for $1700 it’s a no brainer in my opinion.