I must have sold hundred of PCs over 20+ years in this business. Acer was the only brand to give me such high failure rates.
I have a number of Asus routers in various offices. Quite a few using an RT-AC66U_B1 as their OpenVPN server. Some of these reaching close to a full year of uptime with zero issues.
You don't need a 300$ router to handle an office of 5-10.
depends, where i work my usb-c extension broad down the network, making the router unresponsive and disconnect from internet. However both routers they used were tplink and an expensive dlink when before this i've been suggesting mikrotik to them, even offered to lend my CCR and i know mikrotik is not affected by this and it is much harder for an ill configured device to bring down a mikrotik router than a consumer router.
But yes mikrotik routers are a lot cheaper too, so it holds true that you dont need an expensive router for a business but you do need a proper one.
With regards to acer, newer acers have decent quality and i'd argue that hp is just as bad if not worse and have not improved their pricing, selection and quality. Lenovo has dropped in their quality, pricing and selection meaning you get higher prices, lower end hardware, limited or pricey selections and quality has dropped too.
The biggest issue here is that on the lower end, some laptops are wrocking low end/low voltage dual core i5s with super low end nvidia GPUs, 4GB of ram, a super slow hard drive. Despite the budget line the i5 tricks people into thinking its good and almost every major laptop brand is guilty of selling this particular modal/range except for dell that have their own inspiron line. But the acer gamer or enthusiast line is cheaper and of decent quality so i would not discount them and dell has really bad board failures. Thankfully when my alienware board burned from gaming it was under warranty, but 5 other boards were sacrificed in order to fix it, all those i7s and 1070Ns wasted, only thing alienware was the only brand that had a 1070N that was actually equal to desktop in clocks so its a bit faster due to a bit of extra hardware.
If you want my recommendation for a laptop, acer is one of the brands, illegear, msi, asus. Although sadly on the low end many brands dont have good selections except for the chinese so dont discount xiami, huawei, etc.
If upgradeability is important, the chinese brands are a no go since they have the ram and storage soldered onboard to sell their service.