IMO, the lighter the switch, the lighter any tactile bump is. I would type on both for awhile, I think you would get used to it. When I first got my MX11800, I could barely tell any tactile bump, but after I used it exclusively for a few days and got used to typing with "lighter fingers," I could easily tell where the tactile bump was, and I didn't bottom out as much. Now, when I go back and use Alps blacks, they almost feel like buckling springs.
On that note, I have found that the fake Alps blacks in the ABS M1 are more tactile than the Dell. It might be worth checking out.