Itunes VS Amazons season passes for TV shows

[AssMan]

Okay so both 24 & Heroes is on at the same time & same day. I am mainly considering just watching 24 & then just download Heroes the next day. Amazon & Itunes both have 24 while Itunes is the only one with Heroes. Yes I know there are other ways to download shows but doing it from Itunes & Amazon is more then enough decent quality & the best part no annoying logos on the video. I am thinking about just getting a season pass for Heroes because its the newer show & only on its first season. Have any of you hypers used a season pass from either service before ?