Slick Tricks fly better than any fixed blade head I've ever shot. I was getting 6" groups at 100 yds out of my bow setup. To me that is pretty awesome. I liked the regular Tricks over the Magnums. I popped a doe at 68 yds in an open field and got a complete pass thru on her. The only thing I really didn't like about them, is they don't hold up very well with hard impacts in the ground. The blades will be wrecked very easily. Of course you can always buy replacements, but that's only good if the tips of the broadhead hold up. In my testing, that didn't go over really good. They are a great flying broadhead and pretty sharp for an out of pack broadhead, but they aren't the toughest head out there.
Never shot the Montecs but I hear they are razor sharp and hold up very well.