My Wndows systems are Dell. They sell Alienware too.
My newest system are XPS 15 7590 with an i9 processor, 64 GB RAM, 2 TB SSD, 4K monitor. It's a little old--purchased in 2019--but it still runs circles around most laptops I've come across. I also got the 4 year hardware and accident coverage (from Dell, not a third party).
Since laptops are hard-to-impossible to upgrade, get the best you can so it will last. I usually max everything out and then decide where to cut back due to budget. (Dell also offers financing.)
Some notebooks can be upgraded to a limited extent. I have an Alienware X17 system at home; I have its RAM maxed out at 64GB, but the memory modules are removable. It's increasingly rare to find notebooks with removable, user-serviceable RAM modules. So many OEMs just love soldering the RAM onto the motherboard so they can be like Apple. The SSD bays in the computer have removable drives that are easy to replace in case one fails. As bad as baked-in RAM can be, some OEMs have the audacity (or stupidity) to solder a computer's SSD into the motherboard too. A failure in a baked-in SSD can result in a very expensive repair job or just require the entire notebook to be replaced.
Making matters worse, various small form factor computers (Mac Mini, Mac Studio and various other hamburger size computers) are using the same notebook PC manufacturing methods, often soldering critical components like RAM and even the SSD into the motherboard. Traditional desktop tower PCs are either getting more expensive, harder to find or if they're available at a site like Dell's they're harder to configure with a good price to computing power balance.