Wouldn't backup and restore speeds be convenient enough to not even bother with the snapshot apps and their risks? With most of the newer motherboards and numerous cases with USB 3.0 ports, I find it surprising few external SSDs are available. Prices are high for that reason too. There is a Transcend 64 GB available from several vendors for less than $100, which is the most reasonable right now. Yet that is much higher per byte than internal sale prices.