If you don't ask questions, you can't get answers !! So ask away.
What I meant by my earlier post was, let's say your SSD does 550MBs read. If you RAID0 it and it does 1000+ will you even be able to notice since things will be happen pretty darn fast with only a single one. If an app starts in one second with a single SSD, you aren't going to be able to tell that the RAID'd drives start it in 500ms.
If you are doing file transfers from a HDD to the SSD, the HDD is going to be the bottleneck anyway.
If you are loading game assets on the RAID config, you may notice a loading differnce, though.
Not sure about Trim on RAID or performance degredation over time.