I'm just now getting serious about beard growth because on the horizon I see villages to plunder, and no plundering should be done clean-shaven. As such, I am greasing up my axe and oiling my beard to be the most presentable. So far, Legend is my favorite as it gives me the subtle spiciness I need to keep myself motivated. The other oils are also great for a different smell. I find I prefer one with an odor because of the stench my enemies excrete as they see me approaching. Totally worth the buy.
I have used all four now and I really like them all though my favorite is the "Legend". Great scent, makes my beard look amazing, and the wife really digs it. If you're on the fence of whether or not to purchase beard oil, just do it, it's totally worth it.