Re: Your personal experience w/ vent hood filters
To be honest, I've never paid that much attention to the filter screens themselves. Whatever came in the hood is what gets used. IMHO, what's important about a hood vent is that it vent whatever steam, heat, or odors are coming from the cooktop, as long as it does that, everyone is happy.
The purpose of the filter is to catch most of the grease and oils in the air stream so that they don't collect inside the ducting and cause a fire hazard. In that respect I'm guessing the mesh style filter would work better than straight louver type filters. All filter types are easy enough to clean, simply soak in some dishwasher detergent for a while then rinse. If you wanted to you could run it through the dishwasher afterward for more cleaning.
Unless you do a lot of deep frying, most screens don't have to be cleaned that often.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!