Because of my memory card problem, I have invested in a SD card adapter($5), and a new PSTV system ($30) in hopes that I can manage to play several of the handheld only Vita games that are currently not working because of this memory card failure. Please remember to turn off your PSTV when you are not using it for a few days/months, as the memory card in the PSTV can mistakenly be in frequent use, if you don't disable automatic updates.
I also have 2 unopened PSTVs that I bought on sale, just in case my current one bites the dust. I also make it a habit to shut down all of my systems and unplug them after playing them.
I bought the Vita so I can play the games I bought that won't load on the PSTV, so far it hasn't run into any problems. If the Vita starts having corruption problems I will definitely look into getting a SD card adapter.