I recently traveled with 15” mbp, Launchkey Mini Mk3, DT 990’s, a PMD 620 and Sony A7sii.
I find the 15” size a bit unwieldy these days. It’s great for the graphics chip, but if I could, I would much prefer travel with a MacBook Air. I’m not constructing anything on a trip a MacBook Air couldn’t handle, and it’d get the weight down.
I’ve traveled with expensive audio gear on trips before, and I’ve lost luggage with gear inside it too. I think the best approach is a few light things in a backpack.
Unless you are relocating for a period of time, even a 2-4 week residency, in those situations I take a more extensive setup.
A laptop and small lightweight controller is my preferred approach for travelling however. Even the small amount of gear I mentioned at the top accumulated its fair share of cables, chargers, dongles, batteries etc.
If I’m moving from place to place, I find it’s better to relax on the trip, just focus on recordings and enjoying your surroundings, and bring the material back to the studio when u return.
It all depends though. If I have a new standalone box I’m excited to learn I generally take it a long also, upcoming gigs can determine a bit of what u take also.