In my personal experience no. I bought an external enclosure to recover an old hard disc, but I'm not able at all to use it on my computer. In my brother computer the enclosure works without problems at all, but for some reason my computer refuse to recognize the hard disc
Sorry, I'm not able to answer
Performance will be slower than an internal hard disc, because the USB connection is slower than the IDE or the s-ata one.
Data quality and durability are the same of any hard disc (internal or external one)