We find the destroyer is the best seller but both are excellent boats, Based on the 5.5, 2.28 beam the destroyer has an open bow locker as standard, where as the op has an upgrade to close bow locker standard but on the 2.28 beam, the hatch needs to be bigger to get a good size anchor in. You will need to watch the destroyer if going 4 stroke as it has a max transom weight of 170kg where as the op is 200kg max transom weight. My personal favourite in that size is the destroyer but you will be very happy with either.
90 hp is generally enough on these but I'd go 115 if the budget will stretch to it. Probably a bit far to travel but we have one here
available with a 90 or 115 opti