I originally was going to get the 2.53 version of the 13', but after reading multiple threads on it, i have been convinced to get the 2.26. I will be upgrading ram to 4 gb from 2 and the hard drive as well. Any suggestions on what would provide maximum speed increase for around under $300? I know some 3rd party hard drives and SSD's now are not supported with the new update for upgrading the SATA....Any help is appreciated