Looking to get rid of my 998HD SI unit and get the Helix 9 SI...I’m stumped on whether to get the gen 1 unit or take the plunge and get the Mega unit.......is the price hike actually worth it? If it’s not then I want to save some $$ and stick with the gen 1....im sure either way I’ll be happy. And if I get the gen 1 then I can use my existing transducer so that’s a plus.....