I have BSNL FTTH with Sharp AS-341 as main router. I have two routers at my home from previous connections.
D-Link 2730U https://www.dlink.com/en/products/dsl-2730u-wireless-n150-adsl2-router
TP Link TL-MR3420 Router ver2.4 https://www.tp-link.com/in/home-networking/3g-4g-router/tl-mr3420/...
Was using this for quite sometime with 2 extenders + A6 in onemesh configuration, kept one extender to use the ethernet port on system where there is not cabling.
Works like a charm with very good coverage on Onemesh.
For non-local buyers I will be packing this very well however any issues...