I use mine all the time, much easier than dealing with a nasty sink strainer as I just spray down the sink into the disposal and run it. Also keeps the trash from smelling.
If it's being smelly under the sink, it's broken or not installed right. If it's being smelly from the drain hole sink side then you're not cleaning it from time to time (Which is as easy as dropping in some cleaner and running it every other month or so).
I'm actually looking to upgrade mine so it can handle some bones
Probably look to secondhand commercial stuff, anything with ONVIF support should be fine.
Picked up some domed outdoor Cisco IP6630s awhile back off eBay for cheap and while not the best image wise they're built like tanks AND they give you full root access lol