I try to build bases with at least one additional biome nearby. So for example, my latest base is in a Meadow on the coast, but a Black Forest (with a mountain in it to boot!) is nearby. It saves on travel time and I know when I need to move to the next biome it won't be far away.

I do try to avoid being to close to Plains though, there are enemies there that like to wander out and start trouble.