Without knowing your desired turn over rate, volume of sump, submersible vs. externally plumbed etc.. It's is really just personal opinions/preference from here. If you can provide those details we can help you narrow in on the best choice.
Have a look into: Laguna "max flo" pumps. One of the best on the market from an energy consumption vs. flow rate, ratio. These are great pumps in general. I have a few and have nothing but positive things to say. For external pumps I only use Reeflo models and have nothing but positive things to say about Reeflo as well.