Recommend laptop for Linux

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Hi all.  Just thought I would try to cut to the chase and ask for any recommendations for a laptop 15 inch to dual boot W10 and Linux.  Have been researching it now for a few weeks without a positive result.  Want something for around £800 that I can install Linux on without too much difficulty and run it for years to come.  Any answers will be much appreciated.

[Mark Greaves (PCNetSpec)]

Must it be new ?

is 15" a minimum, or would 14" do ?

Is it going to be used for gaming ?


My own preferences (if no gaming) would likely be to go secondhand for a Thinkpad 'T' or Dell 'E' series.
(or maybe go nuts and get a secondhand but recent Dell XPS 15 or Thinkpad X1 Carbon Extreme if gaming were a preference)


[EDIT]

If gaming isn't a concern and you want new, maybe this
https://www.ebuyer.com/874318-lenovo-thinkpad-e590-laptop-20nb0016uk
which gets good reviews
https://www.notebookcheck.net/Lenovo-ThinkPad-E590-i7-8565U-UHD-620-FHD-Laptop-Review.414821.0.html
Thinkpads are generally well thought of and usually run Linux well .. at least the 'T' series and X1 Carbons are.

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Yes new, 15 inch at least and no gaming.  Main interest is trying different distros on virtual box, watching videos and using the internet in general.  Thanks for the reply,  I will look at your suggestions. Ta.