Granted things have a certain end of life, but netgear really peed me off with no updates for DGN3500 in less than a year, however North America firmware got a little longer. Decided to buy a Draytek in the end. Solid router and get firmware updates for a long time, eg 2820 still getting firmware updates after 7 years !
Would have loved to put DD-WRT or OpenWRT. on the DGN3500 but it's not supported by any open firmwares.