Frenchmon from what you've told me of the albums you acquired, a lot of your noise is due to the condition of the vinyl. A well taken care of LP can be decently quiet. With that being said I still hear noise between tracks unless it's an exceptional LP. this is why I don't like Classical on LP. If you've accepted Poppa's offer for the Ortofon that would be a good place to start. I've never used Grado carts but if they design them to respond like their headphones..... that could account for the sound you describe. Your Cantons are also very revealing in the midrange which is going to accentuate noise in that area.