AD20.5 Titanium 20cv/3v (preferably clip point) or Nano Shark Stealth with a Shark-Foot blade? Now I already have the MG AD20 in 3v Clip Point with G10 Scales, and a few other knives (para 3, mini adamas, small seb). Should I get the AD20.5 for 40% off even though I have its big brother, and potentially cause an overlap in my collection, or should I get the Nano to add some variety, despite it being less of a "steal" at 20% off ?