I've got a Verizon MiFi for work, which is used in conjunction with VPN. A lot of my stuff is secure/thin client and I push and pull pretty large files for pictographic analysis, which consumes a fair amount of bandwidth, and gets tricky when you are in a neighborhood with one remaining tower serving all EMS and civilian traffic after a disaster. Verizon will throttle you in those circumstances, ostensibly to better serve everyone. But I know Cal Fire felt differently about Verizon's assessment of what better serves everyone when they got throttled the last time we were working with them. However, in non-disaster scenarios, I've never had a problem with bandwidth or through-put on my MiFi, and in the afternoon the dedicated connection is often better and more stable than my home cable connection, which goes to hell the moment all the kids in the neighborhood get out of school.

Also, Dell sucks. I say that while writing on a Dell XPS desktop I bought last year, which replaced my previous Dell XPS that lasted 12 years. The hardware is fine when it works. When you have a problem, Dell is a nightmare to work with when you are still within the warranty period, let alone when you are out of it. My current XPS does not play well with the discrete graphics card it came with. Will spontaneously black-screen crash at random intervals. Switch to integrated graphics and no issues whatsoever. Whatever the conflict may be, the Dell provided card swap didn't fix it, nor did the assorted registry edits, settings changes, diagnostics, and all the other mess they put me through before they agreed to send out a new one.