If it’s the rat3 ltd with walnut handles and thick leather sheath, it’s totally worth it. If it’s just the old rat 3 the 1075 or even the 1095 version (can be found even cheaper on sale) then stick with the carbon steel version. If you don’t mind serrations, the tak-1 is still available for about $100. Edge retention is exactly as expected, given Ontario’s spectacular ht on both 1075 and d2.