how good is openwrt these days? i used it a long time ago on tp link hardware are remember it was not too good...like adding own scripts, addons etc. and then i tried stuff like ipfire,ipcop and pfsense. pfsense was so much better and now opensense is quite good. how does current openwrt compare?

Whilst that's a nice slogan, in Electronics "open source" doesn't mean anywhere as much as it does in Software because it's generally just knowing which components go into the circuit, which is but a fraction of the work (laying out the board is a massive chunk of work, in some cases most of it, and at high enough clock speeds circuit design is an art in itself).

Mind you, I like the Orange Pi and Banana Pi guys, and the idea of an SBC designed for being an open source router is pretty appealing, though nowadays maybe pfSense would be a better choice than OpenWrt.

Finally this thing having only 2 ethernet ports + WiFi makes it little more than a regular $70+ SBC board + a box - something easy enough to put together by any technically inclined person - which isn't exactly exciting.

The very example I provided comes with an mPCI-e slot to install a WiFi card of your choosing.

Also they have SIM card slots so you can install a data SIM card and set-up a fallback configuration that switches to it if your landline internet connection goes down.