I’ve learned this the hard way. Got two nice, different Panasonics in a row only to have both fail after a relatively short time period (“relatively short” kinda varies for me since I think things that happened five years ago happened “the other day” these days). After the second failure, I just got the cheapest of the Panasonics, and it’s outlasted both of the previous ones already and does just as good a job.

Luggage.

You don’t want to be repacking your shit while late a for a flight because you’re a kg over the limit and it’s gonna cost an extra $100 if you don’t and mistakenly rip the zipper off your carry-on. You really, really don’t.

You don’t have to completely break the bank either, but if you value your sanity, I wouldn’t spend too much less than $200 on a carry-on/check-in pair.