For the specific hardware architecture of the Z10, version 10.3.2 offers distinct advantages:
If you want a minimalist, email-focused device with an incredible keyboard (virtual on the Z10, but still excellent haptics), yes. The 10.3.2 autoloader polishes the BB10 experience to its absolute peak. Use it as a work-only phone, a music player, or a writing device.
Do not touch the cable. Do not close the window. You will see Flashing: OS... for about 10 minutes, then Flashing: Userdata... for another 5 minutes. Finally, you will see: Done. The autoloader will close.