Which Macbook Pro 2018 is better to invest in?

Question

macbook

The task is to completely switch from a desktop to a configuration of two 4k monitors and a macbook. There was a choice of the following models (all 2018).
1. MacBook Pro 13 Touch Bar i5 2.3/16/512 SSD - 170 tr.
2. MacBook Pro 15 Touch Bar i7 2.2/16/R555 4Gb/512 SSD - 200 tr. Run 60 tr. - if you add another 10, then just two 4k monitors. In the first variant, the absence of discrete video confuses, given that two HiDPI monitors will be used. I'm afraid of lags. In the second and third options, it is not clear whether it is worth overpaying 30 thousand for additional 16GB, and whether they will be needed, given that the laptop is purchased for up to 5 (for 13 inches) or 7 years (for 15 inches). There is no possibility to order from behind a hillock or buy a gray one, since I live in the province.
3. MacBook Pro 15 Touch Bar i7 2.2/32/R555 4Gb/512 SSD - 230 tr.
At the moment I have a pentium g4650, 16gb RAM and 256 SSD, I'm doing frontend, WebStorm is open in normal mode with a large project, a local server with webpack is running, and sometimes additionally on a different port backend + VSCode, Postman, Browser with 50+ tabs, a couple messengers, and some kind of broadcast with football :) The RAM is crammed with 10-12GB, but I'm on Ubuntu In the future I plan to study mobile development for ios.

Answer 1

Operation is the most important thing. So the third option.
However, pay attention to whether processors are vulnerable to the sensational Meltdown and Specter .
As far as I know i5 and i7 are affected. Although, perhaps, these are some new versions - I'm not sure for sure. In general, I personally will wait another year with the purchase / upgrade.

Answer 2

taking into account projects - tabs - take 32GB of RAM. And discrete video for 4k monitors ...
But of course I would have assembled a PC. easier and cheaper)

Answer 3

I'm also for the last option with 32Gb RAM, with such a margin (for 7 years) - it's the most, since now 16gb is just a necessary minimum for development.
But I would not count on such a period ... My MacBook has not lived for more than 4 years, problems begin!