Are there any reliable ~$1000 laptops to host linux?
... what? That's simply not true.
Dell also has an upcoming Memorial Day sale where they will discount certain models, and the new XPS 15 is due out next month.
The storage in the MBP is wicked fast even in the base configuration.
Samsung PM981s (and really Samsung SSDs in general) tend to trounce the competition, but IIRC the XPS 13 uses some mediocre SK Hynix SKU.