i have 128 and have all my app and files on ssd. have some movies from iTunes too. still have about 60gb left and i have a 500gb external for anything and everything else. I'm watching what goes on it till prices lower and then ill go to 500gb ssd.
I'm thinking I will be going this route soon. I thought about the 240gb SSD but there probably isn't a needed since I'll do the optibay at the same time (with my 750gb HDD). I would only use the SSD for OSX + programs, Bootcamp windows + a few games, the HDD would be music, pictures, movies, ect.. The 240gb SSD would be nice but its not needed and the prices is still pretty dang high
For people with the optibay of SSD and 7500rpm, does your battery life get noticably shorter?