I said goodbye to cartridges last December when my wife gave me a Dovo Shavette for Christmas (along with an excellent fine badger brush from AOS), and have since used staights exclusively, and I shave every day. There is the rare, occasional Saturday that I don't shave. I have 7 straights, and the Dovo Shavette, and no other razors. I use the shavette to clean up the back of my neck on Sundays. There are mornings when I am in a hurry, and I am able to get a quick shave with a straight, and a damn fine shave at that. On those rushed mornings, I don't do a final rinse. I simply wipe off any remaining cream from my face, followed with a splash of A/S. This leaves my face feeling soft and moisterized, whether I used a soap or cream.
I have thought about getting a DE, if only because that is what my father used, but I am not sure that I ever will.