Thanks for all the input, fellas. At this point, the Colibri is out. Now it just do I stick with my current cutter, or pick up a new one. I feel like the cutter I have now is not cutting as cleanly as I expect the Xi2/3 or Palio do. Maybe its all mental since its a $12 cutter I got for free. Along with being sharper, I imagine the blades on these other cutters sit closer together, giving a smoother cut (I could be totally wrong; I just remember looking at my cutter and thinking the blades could be a bit closer without catching each other).
Right now I'm leaning towards a Xi2 or Xi3. @marshall9779 - when I bring the fam over for a Skins game, I might have to take a look at your cutter if I haven't pulled the trigger by then.