I'll be traveling to SEA, Oceania and East Asia later this year and was trying to figure out if I should splash on new traveling gear or if I'm fine to just run with what I have available already.
Around 10 years ago I backpacked Cambodia and Vietnam and had a big nice 'backpacking backpack' with me but ever since then I just traveled with 'normal suitcases' but I haven't been on a trip over a month in a while.
Currently, I could just take a bigger checked luggage suitcase on wheels as well as a carry-on (certified or whatever, correct size) small suitcase. But I was also thinking about buying new gear like a high quality duffle bag or something along those lines (honestly Peak Design marketing got me there).
I'll be going "Indonesia -> Australia -> New Zealand -> Korea -> Japan -> Vietnam -> maybe more" later this year and I'll mainly be bringing along normal clothing and very very little and old/unexpensive camera gear. We'll mostly be staying at airbnb's, hotels and hostels - no adventure travel, no camping etc.
What's the advice here? Will two suitcases do (maybe along a day-backpack that I stash in luggage empty)? Is a duffle better for this type of travel?