I am having a tough time deciding on which one my concern with the 3500 is getting it with the siedio innocase rugged case is that it will be bigger than i like, but on the other hand is the 1750 really worth it? if i get a couple more hours with the 1750 I would be happy with that but I wanna get some recent user prespectives, I am open minded on anyones thoughts on pro's and con's with both .....thank you for your input in advanced