Decided on the Yamaha HPDI 200s. It was a hard decision. Looked at Optis, Suzuki, Etec and Yamahas HPDIs due to the limitations on the bracket and 26" centers. I found a good deal on a pair of leftover 200 Suzukis (about $2k less than the HPDIs) but the extra weight and dealer network had me somewhat concerned. I know the Yamahas are near bullet-proof, very efficient and have a great dealer/repair network. I could not get the Merc or Evinrude dealers to budge on price. Ended up getting the engines from Boats.net (Central Florida Yamaha). I decided to rerig everything including the binnacle, gauges, harnesses, battery cables, etc.