So, I need someone to give me the dope on rail covers. I've been looking at Magpul, KAC and Tango down. I can't believe these things cost so much! I'm drawn to the Magpul the most but I'm wondering what the weird looking ends are on the KAC and Tango Down versions? Which has the best grippy feel in the hand? Looking for some info from those with first hand experience.