My recommendation is to pick a model that is checks off most (if not all) of your requirements and try yourself. At this stage you have enough information to make a decision, most computer makers offer a 14 (if not more) day return. Tbh, I think most of the models recommend over the past weeks, and months would be a fine solution but its your money, your decision and you need to be at peace with that decision.
As for me and my needs; I'm very comfortable with windows, but I prefer OS X. I think this go around, I want a beefier computer then what apple typically provides and so I'm personally leaning towards the 15.6 Razer, specifically the 1060/144mHZ version. With specs being similar to many other coffee lake laptops, I really like the design of the Razer, and its vaper chamber cooling is superior to heat pipes, so much so, it doesn't incur the the throttling that the Dell XPS does.
The one darkhorse for my choosing a new laptop is buying a used 2015 MacBook Pro, I'm seeing them being sold for a around 1,200 (refurbs are 1,700 on apple.com). This in effect kicks the can down the road on my decision on moving off the Mac platform. I own an iMac and the laptop is for my mobility needs, so there's something to be said for sticking with a MBP, but I do wonder if Apple's direction with their laptops is compatible with my needs. The net effect of buying a used laptop allows me to defer that issue for a number of years.
After comparing some laptops, I cannot find a reason to get a MBP 2017 especially after my two-week experience with the keyboard. Even it has no reliability issue, I just don't like the feel and the sound of the keys. Apple does offer good customer services though.
In general, if I don't play games, is there a point to get 144mHZ version of the screen? David Lee mentioned that 144mHz screen takes more battery life. Both Razer and Lenovo offers two screen options.
I will use Linux a lot. I found that most Lenovo Thinkpad are compatible but there is no mention about Razer's laptop. Problem is that most Lenovo laptops use i7-8650U. Heavier ones (2.7kg or above) use i7-7820HQ. Somebody in Macrumors mentioned that he has a Lenovo P series. Don't recall who that is. Possible options are: X1 Carbon 6gen, T480s, T480, T580 and P52S. P51 and P71 are too heavy as they are 2.5kg and 2.7kg respectively. I carried my MBP 2010 17" with an AC adapter and some light stuffs yesterday. The combined weight was large enough to temporary cut the blood circulation of my arm. I guess I would stay with about 2kg or below.
Here are my requirements:
- need to be able to connect to a 4K TV @ 60Hz with Chroma 4:4:4 (TV has HDMI 2.0 port)
- compatible with Ubuntu Linux and be able to use eGPU under Linux
- has a Thunderbolt 3 port to connect to the eGPU at full 40Gbps speed
- ideally below 2kg
- about 10 hours battery life and if possible, can change battery easily
- if possible no big and heavy AC adapter
- good customer support and after sales services
- Intel 8 gen (6-core is better but not a must)
- no heat/noisy fan/thermal/throttling issue
- no scaling issues when using 4K display (both internal LCD and external 4K display)
- no scaling issues when the LCD and external 4K monitor are at different resolutions