I have just upgraded my dvd to a dv79 and am currently using it with a sr5300 and a paradigm sub. What i have found is the the bass from the sub seems to be less forcefull and has to be turned up a notch or two, but it does seem more controled. especialy in 5.1, also, overall soundtrack is quiter(at adverage Listing levels) but but can go louder than it used to without getting confusing. Is it normal for a 5.1 soundtrack to change when used with a better dvd player. I didn't think it would make that much difference. Don't know if that make much sence, as im really tierd.