Angie,
Warranty and service is major issue if you move away from Dell/HP workstations. Make sure to check it what is offered and how it referred. Dell (and I believe HP) have locally based usually very good support for the workstation lines.
Dell and HP both have Outlet stores with refurbs, returns etc. When I was buying machines, I always bought there. Major savings and same warranty. Never had an issue.
Unless you like tinkering yourself, that’s what I would recommend.