So im about 15 neck shaves into this, and i've shaved the old dome twice.. The only thing im still using a cart for is to trim the jawline of my beard. I tried it with the Dovo but its too long to cut a clean curved line.

Id like to abandon the Carts completely so i'm wondering what might be a good alternative for trimming the old beard line..

Do i need a DE?

Any help is appreciated as always.