～したほうがいい vs 〜したらいい (Should)

Yesterday I went to speak at an event, and before the event I wanted to ask what should I prep or bring in advance.

tl;dr

• Ask with: したらいい？ (What should I do?) – I should ask with this usage!
• Warn with: ほうがいい。 (You’d better do this.)

〜したほうがいい

• Usage: Strong advice/warning
• Vibe: You really should do this (or else…).

病院に行ったほうがいいよ。
You should go to the hospital. (or else it won’t get better)

パソコンを持っていったほうがいい。
You should bring your computer. (or else it would be a bother)

〜したらいい

• Usage: Asking for instructions, asking for advice, or making a light, non-pressuring suggestion.
• Vibe: What’s the best way to…?/It would be fine if you did…

何を準備したらいい？
What should I prepare?

どう言ったらいいかな？
How should I say it.