Well as you want to return same day just choose the cheapest - what does it matter where u go if u return at spot ? METV myself you can go in and out land/air no restrictions or concerns. But why the rush - just stay a few days and breath in another culture.
I know how to weight the comments in this and other groups. Most want to tell a story while sticking to the facts is needed. I am for decades in Asian countries never encounter the slightest issues if you fulfill the requirements. I also got never fined , robbed or had issues with customs so yes I might be an unicorn 🦄.