Just to update some more, I posted this on another thread.
I have MacBook Pro 13-inch, Mid 2009. 2.53 GHz Core 2 Duo, 4GB Mem. Sata II (3 Gbit/s)
OS X 10.9.5 Mavericks with Chameleon to turn Trim on.
I have a 240GB SanDisk Ultra II (TLC), the drive is only a few months old.
Blackmagic Speed Test is reporting;
Write: 186 MB/s, Read: 262 MB/s with battery
Write: 208 MB/s, Read: 264 MB/s with power
