Unless you need to force TRIM on an older OS, however, skip the "SSD optimization" software that's out there. These programs promise to optimize your SSD by shuffling files and running TRIM, but your operating system already TRIMs by default, and your SSD's firmware has "garbage collection" tools that performs housekeeping tasks to optimize performance. There's no evidence a third-party utility can improve on this.
The good news is that SSDs are getting bigger, cheaper, and ever-longer-lasting. One day we'll hopefully have large-enough SSDs that we won't have to worry about juggling files between drives. Heck, if you don't need much local storage or don't mind spending top dollar for abundant speedy solid-state storage, that day may have already arrived.
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