Keep in mind the following -

While the DL is cheaper, the service is also cheaper. That is to say there is none unless you buy it from DL USA.

The DL is as strong as the DA until the DA is well broken in. Then the DA is a bit stronger.

The Evolution engines are overpriced and the necessary parts you will need from Horizon are even more so. Unlike the DA, it does not come with standoffs and unlike the DA, there is not much cheap or used stuff you can pick for it on the web - mufflers, drilled props, etc..

Finally, the Evo 58, while more powerful, is also significantly heavier than the DA. I believe the Evo 45 is about the weight of the DA-50, and despite some hope heard is some of the posts above, unfortunately not as powerful.

There is a reason people stiil buy the DA-50R. It's a hard act to follow...