OWC Mercury Electra 3G vs Crucial M500 vs Samsung 840

I have been searching tirelessly on the appropriate SSD for my late 2008 Macbook 13" and looking for some clarity (hopefully closure) on the matter.

To prevent any sidetracking, I know that the best outcome would be to buy a new computer all together, but not only am I tight on funds, but I am hoping that I can improve the computer's performance. The primary question revolves around the most suitable SSD, but I am going to throw in a question about adding a data doubler as well.

• Between OWC Mercury Electra 3G, Crucial M500, and Samsung EVO 840, which would be the best from a performance and reliability standpoint?
  • I am aware that my Macbook 5,1 has a SATA II capability, so I may be limiting the full performance of the Samsung 840; however, several users have stated it to be the "best" for the computer. I have also read that Samsung nor Apple support this SSD and users have faced issues when installing the OS and general use.
  • I read that OWC and Crucial are designed more for Macs and provide support, but the curve is always with the EVO where people swear its the one to use.
  • Does a larger capacity (such as 250 over a 120) improve read/write speeds?
• As for the data doubler, I was told by someone at Apple that in addition to a SSD, a Data Doubler with a fusion/hybrid drive would make it a sweet computer for its age, consider the Super Drive can be swapped with a HD.

  Slight concern is that the aluminum caddy's may cause heating issues, but I read somewhere the applying tape or something to separate more space would alleviate it? Not 100% on that.

Would either of these cases (or perhaps both) cause my battery life to run shorter? I heard that the Super Drive is only powered when you use it where as replacing with a HD would cause it to continuously run, resulting in lower battery life.

For what it's worth - I simply want my computer to run faster as I am using some Pro apps on my computer, and wouldn't mind having a second drive for storage locally inside the computer. I do have an external hard drive, but it would help from having to carry it everywhere with me.

I know I'm slapping a lot at the forum at once, but these are all the specific questions I have and hoping to have them addressed inside one forum as my scavenge hunt has been hit and miss.

Thank you!