If I could afford it, I'd go with the twin - way cooler. However, I'd go for twin JetCat P-60's - I think hands down, the JetCats are the most reliable engines out there. I don't have any experience with the P-60, but based on the two P-120's and the P-80 I have and the many other Jetcats I've worked with, they are the way to go - but that's a political statement somewhat outside the topic of the thread... sorry.

Bob