I will throw some thoughts out there, you already have some good information in this thread
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Dell or HP are the top two for windows based laptops
The different price points offer different performance and/or durability.
With Dell, Inspiron is generally the low end, moving to Vostro as the low end business class.
XPS is higher end residential and Latitude is higher end business class
Dell Precision being the highest - these run forever (I guess Mac people have never seen them)
business class usually has better build quality than residential class, however that isn't always true.
Business class generally provides all the same exact hardware from unit to unit over an up to 12 month period of time, where the residential class you can buy 3 units of same model over 3 weeks and all could have slightly different parts on the inside.
That said, don't treat your laptop like a football and kick it around and it will most likely be fine, even with an Inspiron
I currently have two HP Elitebooks that are going on 7 years old (Ivy Bridge era) and for email and web surf they work great. I upgraded them to 512gb SSDs and 16GB of ram, and of course run windows 10 on them, they just run and work, never any issues and they get used every day and have for their entire life.
Something that Apple has missed for business critical users is NBD onsite warranty repair, this is where DELL kicks everyone's ass. Shit happens, things break, how does it get support at that point? Dell wins this over Apple any day of the week. Please don't start in with your 'I just take it to the genius bar and they fix it' I am talking about the cases where the genius bar can't fix it, then they ship it off to an Apple depot and you have no idea when you are getting it back. When I supported business users that wanted Apples, I would hand them a Dell when their apple crapped and had to be shipped and gone for 2 weeks. I would also LOL at them as they usually told me at one point that Apples never break or the genius bar will fix it, um nope, not the case.
My advice for BUSINESS users is buy a Dell and get the 3 year onsite warranty (repeat every 3 years), buy with a credit card that extends warranty and maybe repeat every 4 years.
( I generally self warranty as I have extra laptops and can source any dell or hp part I want off ebay and replace myself, not everyone wants to do that)
No matter what you own, you have to ask yourself, what do I do when this breaks?