I have driven a 43 Nor-tech (twins) and would take this boat hands down over anything except a 42 Outerlimits... and that is still in question. The materials and finish are supurb. Also, it is not a 'production' boat. However, the cost is also a bit higher (my guess).
Nothing against the 43 Sunsation, but you would be a test mule for one with triple engings. The hull is a streched Powerplay 38 with no added cabin room. I do not think Powerplay ever did a triple engine. From the Sunsation photos I have seen, the boat looks great.
Sorry to the Sunsation masses, but IMHO Nor-tech would get my $$$.