Hey Maury,
Thanks for livening up our Boaters Forum this morning!
First off, I've always admired the Arima brand of boats. There is a very happy, contented group of owners out there which speaks to Arima's quality, durability and economy.
You've got a solid boat that's comfortable and I'm excited for you to experience your ride with fresh power!
Now you may be aware that I'm an Evinrude guy and you can probably guess what engine I will recommend... But, my answer may surprise you.
If you can re-use your existing controls and gauges, then you'll save money sticking with your current brand.
If not, or, if you're looking for an instrumentation upgrade, then there is no measurable statistic or specification that your current brand can honestly claim will surpass the Evinrude E-Tec.
Weight on your transom is a major consideration as is maintenance cost and downtime.
Evinrude: $pend le$$ and spend more time on the water.
Come see me at the Seattle Boat Show and I will "show" you what I mean!