Thanks Fellow submariner's
thank you for the current advice, no slight intended Steve( I checked the dates on those threads before I commented and I promise not to make anybody repeat anything anymore, lol) .......purchased both.
Only problem is ....when I tried to order it direct threw the Subsim link it stated that it could not be shipped to my address, so I had to order it from a Canadian addressed company.
will have to donate to Subsim also I guess.