ah yes that's another thing. Nightmare to upgrade RAM and it's been like that for a while now.
Nice thing about dell laptops is they all tend to have the same power supplies these days. Seem to have a habit of using TN panels though.
I bought a dell xps 13 9630 last year. 4 days after its warranty expired the motherboard died. I'm never touching another dell product again as their customer service is terrible. I do not know anything about MCS but if they offer any sort of extended warranty it might be worth taking.
Possibly a TN display with washed out colours, limited viewing angles. You should really look for an IPS display, if screen quality is important to you. ie, photo editing.