I saw a great deal recently on a 64GB Kingston SSD drive and I purchased one to install as a second HDD on my older (Early 2008) Macbook Pro.
The installation was fine, I removed the optical drive and got a tray which allowed me to install the SSD as a second HDD drive.
OS X installation went fine, but after booting, I had problems when closing the lid. After closing the lid, the computer would not go to sleep. Opening the lid again would not wake the display.
After taking it to the Genius Bar in Palo Alto, he (Chris?) took one look and checked the system profiler’s Serial-ATA bus. The SSD apparently was not on the SATA bus. It was under the ATA bus. This makes sense because the Optical drive was still ATA back then.
I’m going to go home tonight and swap the SSD to the main bay. This may not solve my issue though, because the main HDD is SATA as well. If that’s the case, I may end up having to use a remotely mounted NAS drive. I got the SSD mainly for the quicker boot up, but I may either have to give up the higher local storage capacity, or get a hybrid drive.
*sigh* Upgrades are never simple.
Update: Looks like having the boot drive in the main bay allows the Macbook Pro to sleep properly. I think it has to do with the way the ATA bus shuts down. When I switched the HDD positions, on sleep, the spindle shut off rather abruptly. I couldn’t notice it before on the SSD because there are no moving parts. After I moved the boot drive to the main bay using StartupDisk, the machines goes to sleep and wakes up just fine. Finally.