Ok so I only made it to page 13 before I gave up and won't come back. I love my mk2 108-109 combo. And when I walked into a platinum SP dealer a couple years ago, he told me to toss it and buy new. "your life depends on it!" that's when I knew SP was not for me. Found a reg tech and a few DIY members to help me out and I still love my old SP set. I will not buy another SP. that line of crap of "it's old buy new" it against the idea that you're buying something that will last. Scuba pro did it to themselves by allowing for dealers to put an expiration date on how long it will "be the best"