It depends what your budget is, and even then I’d really really suggest to go to a real world music store and try out a couple of pianos in the price range you’re thinking of.

Personally I love both the sound and keyboard action of Kawai digital pianos, and anything in their CN (entry-level) or CA (mid-level) range will be a great purchase that will last you for many years. But if you try out a few pianos you might find you actually get on far better with, say, Yamaha or Roland. It’s a very subjective thing.