I think this is accurate to say about any of the newer SSD drives. In normal usage I doubt anybody can tell the difference among them in a blind test.
At this point I think the best thing to do is go with what you think is the most reputable company. Also consider firmware updates on your Mac. Does the company provide a way to do this? Some like Intel and Crucial provide a boot CDRom ISO you can use to update firmware on a Mac.
I read that 25nm NAND cells are good for 3,000 write cycles and 34nm NAND for 5,000 write cycles. I agree in normal use you are not likely to ever hit this limit, but some might prefer the extra cushion.
Does that mean that neither OWC nor OCZ have any way of allowing the user to update firmware unless they either 1) have a Windows computer that is capable of doing it, or 2) sending it back for service??
3,000 write cycles is definitely a lot, but IIRC about 4 months ago, manufacturers and reviewers alike were reporting that the shrink would greatly reduce prices. Thus far, all I have seen is an increase. I'm not opposed to using (or personally buying even) SSDs with twenty-something nanometer flash memory, but I am opposed to paying more money for a product that will fail sooner. OWC changed their SATA2 Mercury Extreme Pro from 32nm to 2x( probably 25nm) flash memory, and they were very quiet when doing it. Well, it will still last a while and given OWC makes good products, it's high quality can be assumed, BUT, since it will need to be replaced sooner, the cost should be less. This is NOT the case. Why would anyone want to buy the current Mercury Extreme Pro (3.0) when a week ago they could have bought the same drive for the same price that will last almost twice as long?!?!?