I'm wondering if I should get a shower screen or if I should just use a shower curtain.

How true is it that shower screens may be hard to maintain? (e.g. mould may be hard to remove (especially along the edges), water stains)

If the shower curtain gets mouldy, I can replace it with another one because it's cheap.

Please share your experience and advice. Thanks.

I also vex over which one to choose.

Well u can do aluminum with acrylic panels instead of all glass shower screen. That's easier to maintain.

Acrylic panels are easily scratched.If you can tolerate the scratch marks, it is a good replacement for glass.