Quick straw poll...

I'm in the same boat as bof (as far as job title goes):

At work I use OpenWRT on the APs[1], and I have one of my servers that acts as a NAT router for the service VMs. At home I use OpenWRT, with the router supplied by my ISP in "Modem" mode (no NAT, it hands a public IP to whatever manages to snatch it via DHCP first, which is always my AP). In both cases I don't use OpenWRT's dnsmasq as my DNS server (I run bind DNS in a service VM/Helios 4 respectively), and at home I also have DHCP handled in the Helios 4.

At work one of my most prized features of OpenWRT is its support for VLANs, which have allowed me to do some pretty nifty network segmentation (in conjunction with Managed L2 switches).

I've always tried to buy hardware compatible with OpenWRT (which has luckily been very easy since the early 2010s) and I've never had any real issues (even on TP-Link routers notorious for huge dnsmasq memory leaks on their factory firmware).

[1]: One AP has a public IP and does NAT/DHCP, the others act as bridges. My pie-in-the-sky dream is for a "big" (>= 48 port, or at least >= 24 port) L3 Switch, with non-stingy Flash (at least 64MB, preferably >= 128MB) capable of running OpenWRT (I've seen ports for some L2 switches, but none sold in my country).