NEED SOME ADVICE!

More than that.

The interest lies in how the spread of voltages and plug types around the world came to be.
I would have expected all former British colonies to use 240V, but those geographically near the US commonly use 110V, probably for commercial reasons.
The vast majority of the world uses 220/240, with those 16 exceptions; only 11 if you add the places with two systems.
Even the UK had varying voltages up to not all that long ago, some areas still used the old 110V until the great sorting out after WWII.
I recall my mother telling me how the whole area had to buy mew appliances when the voltage changed, luckily before expensive consumer electronics were the norm.
The US stuck with 110 after Edison's poor quality DC system was replaced with Westinghouse's AC net, but the voltage stuck around as it had become standard.
The safer lower voltage is inefficient when compared to the better 220/240V systems as you can deliver the power far more efficiently, but it requires more care and better quality gear to keep it safe.
Tesla got that right, but the Euro ideals were naffing things up even that long ago as his 60 cycle system was changed to 50 to keep things metric - daft.

Still, back to the point of the thread and less geek talk ... sort of.

I found one of my great comforts when I first moved was my film collection. I converted the lot from DVD to AVI and bunged them on a hard drive. That made life easier and the hard drive was easy to transport.