Answering question for Speaker - Peavey, 15", Black Widow 1505-8 DT BW, 700W, 8Ω

Product:
Speaker - Peavey, 15", Black Widow 1505-8 DT BW, 700W, 8Ω

Question:
Can you recommend a 15" replacement speaker good for organ reproduction to be used in a leslie speaker application: 122 or 31H TallBoy