The access times are irrelevant as long as the SSD works properly (i.e. no intermittent latency screwups like the J-Micron-based drives exhibit). It's already so much faster in that regard than a conventional hard drive that you just aren't going notice the difference between, say, 70ns vs 100ns.

Random Reads and Writes could still use some improvement, though the better current models of SSD are still better than the majority of conventional hard drives already.