I have an i7 SPro 3 with the detachable keyboard. Seems preferable to the fixed keyboard in the new Surface Laptop.
Don’t know why they don’t add Bluetooth to the surface keyboard... there was a failed attempt w/ Surface 2/3 keyboard but the device never worked (battery fail).
I work w/ an HP X2 detachable. Beautiful machine: tablet on table, keyboard on my lap, and it all tucks away like a laptop when I’m done or traveling. Great product.