Hello,
We use huawei routers and switches in our core, there are stretches where we use capacity approaching 200Gb, on our edge we use full routing with operators and even with IX.SP where there is a concentration of extreme routes, and recently we have implemented it for Concentration of customers (provisions ~32000 PPPoE clients, we've already used nearly 20K in two NE40 boxes) and it's flowing very well, and we continue to expand. We have had no problems with the boxes so far, more than 2 years after it was implemented and running smoothly.
Example of Switch models we use: S6730, S6720 (24-port or 48-port line).
Example Routers: NE8000 M8, NE40
I recommend that you analyze your need to acquire the right box, then you will have no problems.