For best bang and performance for the buck: I still have to +1 for OCZ. When you compare the read/write speeds, they're still at the top.
I have been deploying the 128 gig OCZ units since their invention and have only had eight (out of close to 150) units that had issues. Of those, three were repairable via firmware upgrades. The lesson: Stay on top of firmware updates!
I've also deployed five of the 128 gig OCZ PCIe SSD cards with good success. Same lesson for them: Stay on top of the firmware updates.
Be aware that the experienced write speeds are impacted by their compatibility with the motherboards. On some models, like my Sabertooth 990FX R2, I could only get 150 MB/s write speeds with my RevoDrive2. And it's entirely possible there are certain BIOS settings that needed to be in place for the full speeds to be available. But on other systems, like the Dell Professional Workstation T5400, I would get the full throughput.
I consistently get North of 400 MB/s write speeds with my OCZ Vectors!
When comparing other SSDs, I would start with this as the performance baseline:
http://ocz.com/consumer/ssd-guide/ssd-comparison
I'll also toss out +1 for Crucial's M4; deployed eight of those, zero issues, they're just not quite as fast as the OCZ's.
One time I bought five Corsair FORCE 128 gig SSDs. Four were DOA. The BIOS on three systems didn't even detect them. Been leery of them ever since.
I've repeatedly read good things about the Samsung models, especially the 840. But, even their own spec sheets lists the write speeds maxing out at 390 MB/s for the 128 gig models.
As for the best RAID cards out there, I can't speak to those. However, given the 12Gbit models are now available for decent prices, I'd recommend going for one of those.
And if you
seriously want to max the performance of some of your apps, use a RAMDisk. It's free:
http://memory.dataram.com/products-and-services/software/ramdisk
SSD's can't even compete with a RAMDisk! The only major downside is waiting the very long time it takes to write the RAMDisk to a file upon computer shutdown.