I guess it all depends on your budget,.....
I would try to go with a 250hp, Never talked to anyone that wished they went smaller,...
My preference is a 2 stroke,.....
By the mid 2000's Opti, E-Tec and V-Max are your options in 2 strokes and all are good if they have been well maintained,...
4 strokes are going to be heavier, The early Johnson 4 strokes had their power heads made by Suzuki if I remember correctly. I haven't heard many complaints from the 4 stroke crowd as to reliability,...