Rain Barrels

I am considering rain barrels for my home. We've had some decent rainfall lately, but the drought isn't over. It's just...paused...for a bit.

So - rain barrels. Hook 'em to the downspouts and use 'em to water the landscaping. I don't really have landscaping - I am not the sort who will put on the effort proper landscaping requires. I have some trees and some grass mixed with weeds (mostly weeds) and a few hers. One of these days I'll have some fruit things - blueberries, maybe, or cherry trees - but that's in the future. Still, I like the idea of watering the iris once in a while instead of watching them get brown and sad and wondering if they'll return next year or if THIS was the season that finished them.

I like the ones that have screens to keep out leaves, pine straw, and weirdoes, and spigots on the bottom for attaching a hose. I have a huge roof - one day, it will be prime space for solar panels - so I should be able to fill a few barrels quite easily with a rainfall or two.

Have you considered barrels? What sort? Wood? Plastic? Covered? With spigot or without? I'd like to know - if you have them, how effective are they?