I never had analogs as its only been 7 yrs since loosing my hearing. So I tried on friends analog and was like WHOA! this is freak weird.....just not used to that type of amplification across all frequency I guess.....So I believe too that it would be difficult to get used to digitals if wear analog HA's for long time.
As far as the no sodium thing in diet for meniere's disease, it is with sodium intake, body retains water.....because where sodium goes it brings along with it water.....this is speaking extravascularly too. So in ear and cochlea where disturbance from menieres occurs limiting sodium intake concurrently with diuretic agents....maxide, diazide, spironolactone, furosemide....etc, will help extravascular fluid (fluid outside bloodstream)transfer into bloodstream and exit via kidneys via way of loop of henle. Often times these diuretics can cause other electrolyte imbalance so many people on diuretics take Potassium d/t being lost as result of "loop diuretics".
Diuretics are used to help with a number of diseases like congestive heart failure, high blood pressure, cirrhosis of liver and liver failure, chronic edema, increased intercranial pressure, edema associated with chronic renal failure, and even for acute renal failure.
But its much improvement as i used to have spells daily and now? its much less as i get 5 spells a month. so thats better than before! But my hearing still is kinda like under water and using strong one so wait n see how it goes! 
