DO NOT buy an Omega if you want to shoot conicals. Chances are you will not be happy, I am not with my Omega. Call T/C and ask them if you should buy it to shoot conicals and if they will guarantee it to shoot conicals well. They will not recommend it. There comment when I called: The Omega is a sabot rifle.
I have Williams peeps on both my inlines. I like them. However, I use the "twilight hunting peep" instead of the one that comes with it.