I have five easels. One like that in your photo above, two tripod easels that I use for exhibitions, one tabletop easel for small formats, one fold-up tripod for outdoor use which is crap. And my favorite, made by Lefranc Bougeois but no longer in their catalog, is a double easel. It can mount a picture on each side. Which in my small area is ideal because I can work on two pictures at a time just by turning round the easel.