Depending on what you’re looking for: might be worth checking some of the vintages:
If you want a small range of stitches on a good quality machine I would look at a Lotus (Elna) probably the SP or TSP, they’re incredibly tidy, and completely pack up into themselves by design.
My grandmother had one from new and travelled the world with it.
Other wise there’s the Elna grasshopper or featherweights if youre looking for just a straight stitch.
Both are lighter and less bulky than a full sized machine.
My choice would probably be the lotus. Very tidy, no case, and very light and reputedly strong (I still can’t quite use my grandmother’s yet)