I run a 14 1/4 X 17 stainless three blade on my 150. Ran a 14 3/4 X 19 stainless three blade on my 225. Both are good.
You'll have more top end with your 19 inch.
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1985 Wellcraft V-20, Evinrude ETEC 150: SOLD
1979 Marine Trader 44, twin Ford Lehman 120s
2006 Panga 14, Tohatsu 20
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