I have a precision 3571 and it's pretty solid, I've been using it as my main gaming computer because it's better than my old PC, it does have a few drawbacks tho.
Pros:

• dedicated Ethernet, HDMI, headphone, and 2 USB ports as well as a second USB-c port besides the charging one that can be converted to other things with a dongle - I usually run it with external keyboard, mouse and monitor
• decent battery, can do a few hours of light gaming on just the battery or a full day of just browser

Cons:

• fan intake doesn't have enough space when sitting on a flat surface and will overheat easily, so I have to elevate it with something to increase the gap of hang it over the side of my desk. This does solve most overheating problems though.
• for some reason helldivers runs way worse than it has any right to, my theory is that their game engine just really doesn't work with the weird laptop GPU, an RTX A1000