my suggestion is its only really needed if you are a pro audio person but if your someone who is like me who is a hobbyist the standard version is just fine i got the 2015 megapak for a nice deal on ebay last year and it qualified me for a nice 159 buck upgrade (us) to the ultrapak with harddrive. so i will be happy with that for sure :-).

if you are really really picky with audio quality and have the money to spare no harm in the uncompressed version but i would guess for the average user the cost vs performance would not really big a problem.