Maybe in looks but not quality. They are top notch as far as I'm concerned. You cannot go wrong with Spot Hogg by any means but for less the Pro 2000 and Pro-MT are exceptional sights. I own 4 of them and have had zero issues. What issues are you having with Extreme?

I own 2 Viper Pro 2000's and 2 Viper Pro-MT's. Everyone I know that has gone that direction also loves theirs. Exceptional workmanship, I've had great customer service etc.. Pins very bright and so forth.

Other than the Octane line, I'm likely to not us another line for a very long time to come.

You can order direct from Viper's site or call them, you can configure the size and color of each pin individually (5 pins).