SSDs, trim support, etc.
Actually, I've been doing a LOT of research on this whole topic, because I was just about to pull the trigger on buying a 512GB SSD for my 2010 Macbook Pro -- but wanted to be sure I was doing the right thing before spending that kind of money.
I dug up a few interesting things:
The Toshiba SSD's with the Apple branding on them (which are what they use in all of their products that ship with an SSD) have customized firmware in them that is far more aggressive than normal in doing "garbage cleanup" operations in the background. This is a really good thing for an OS like OS X that doesn't have native trim support, because it ensures the drive maintains the transfer rates it had when you first formatted it and loaded your OS and apps on it. The downside? The more aggressive they get with moving the blocks around and erasing unused ones? The faster they wear out the flash in the drive. Additionally, for an OS that already does trim support and is SSD aware (like Windows 7), all of this cleanup taking place that often as a background task just hurts the performance. That's why drives like the Intel SSDs get benchmarked in Windows-based tests as considerably faster than the Toshiba.
Therefore, it sounds like the Toshiba SSDs with Apple-branded firmware loaded on them are really the best bet for a current OS X machine, BUT there's a good chance that once Lion is out, you'd be better off with a different brand or model.
In a heavily used system, I wouldn't be surprised to see that the Apple branded SSDs they're selling now wind up failing, 3-4 years down the road. (Note that none have warranties longer than 3 years, though some of the competition offer 5 years on theirs. Probably not just a coincidence.)