Ok, I think you are getting some bad advice.
1. There are issues with SATA III in the 15" and 17" MacBook Pros. You'll be safer with a SATA II drive.
2. There are issues with SLC based drives. You'll be safer with MLC.
3. The Apple SSDs aren't the best out there. A lot of people are actually returning their MacBook Airs because Apple is installing either Toshiba or Samsung drives and people say the Toshiba drives are very slow.
4. Drives with TRIM support can work fine with the TRIM Support Enabler. Drives with Garbage Collection (OWC, Intel drives) could have problems with TRIM enabled. You should let those drives do their own thing. Still, it's a topic of experimentation.
5. TRIM is not the end of the world! You can use Disk Utility to "Erase Free Space" periodically and it will have the same result as TRIM, which is writing zeroes over free sectors.
7. There is a handful of things to optimize when picking an SSD: Write times, Read times, Power usage, Weight. You can't pick your pleasure by getting an Apple SSD. The most significant improvement you can make over an Apple SSD is speed.
8. Apple's offerings are expensive. You can do much better replacing the drive yourself.
9. If you want full Apple support, buy their SSD. If you want better specs, do your comparison shopping. There are reliable and better non-Apple SSDs and this community knows which they are.