What Lens for Luggability?

Panaleica 25mm. My arguments:

- in the leading pack lens IQ in the m43 world. Or close enough.

- normal FOV will alow easier framing and composition. Once you get a bit the hang of it, you will take pictures of what you see and worry less about zooming in or out

- single focal lens is useful for holidays and such because it gives all pictures the sense of a 'series'; if you use various focal lenghts, you need to be a lot better to create a similar feeling.

- a fast lens will allow you to  take also shot later in evenings, bars, in available light. In most holidays evenings are a significant part of the experience so it may be worth to have some low-light abilities.

Given all of the above, the 2nd choice would be Panny 20mm (I own it). Slower AF and slightly less light; respectable IQ for the lower price, and easier to carry around.

Any choice you make, enjoy it and have a great holiday!