IMO, SSD as an upgrade isn’t worth it right now. They just don’t have the storage capacity to justify their cost. 7200 RPM drives are “ good enough” right now, especially since you can get them in 500GB varieties.
Yeah, I wouldn’t get the current generation of SSD; but since I’m looking at the 13” I would end up being stuck with the 5400 RPM drive. In a couple years I’m sure they’ll be great though.