Based on your priorities I'd go with the E-tec 60hp...very quiet, GREAT on gas, no smoke at all, and good price/warranty also. My dad has a 2009 E-tec 60hp and I couldn't believe how quiet and smokeless it was when we ran it this summer
It pushed his 17' tinny 35-40mph impressively.
If going faster than 30mph is important I'd go with EZ's pick for sure, the 60 may only push ya 25mph with an 18' hull.
Can we see some photos of the rig?
Good luck with her
