Best to buy some of both. Consider the marketcap but they are both very low at the moment. DAR will have a reducing supply over time so that's huge imo. Deflationary currencies is completely foreign to almost everyone. Tokens/assets/currencies and coins that offer these similar types of buy-back/burning models are going to be massively profitable in the future. Most people have no idea the impact these buy back programs can have. It will take time to play out but I'm stocking up on projects that offer these. Though MER is a fixed supply of 100m with no buy back program, the demand for the token will increase as DAR becomes more popular. We saw this weekend that even minor volume had a dramatic effect on the price. Moral of the story, get em both.