I enjoy both media, but I tend to do more acrylic painting. Why? Not sure.... I did this little 11 x 14 to practice painting snow, which is lots of fun. Building layers and making "snow" appear on a base of darkness is magical. Is it really any different with pastel?
Sold
The process seems much the same. Yet there is a difference when viewing the two similar works side-by-side. I'm not sure what it is...some kind of different quality to the color and light. I haven't done many pastels lately. Both acrylic and pastel painting have the sort of immediacy that I like. I think that the reason I am less inclined to work the pastels is the fragility of the work, the need to keep the piece protected. I can so easily pop an acrylic piece into a frame, no matter what its size. When I find an odd-sized frame that I want to use, I can cut a piece of hardboard to fit, prepare it and paint away. To put a pastel in that same sized frame, I also have to get a mat and a piece of glass, both of which require a 60 mile drive to the nearest Hobby Lobby. Dealing with glass-covered work at craft shows also makes me nervous. I'm just not good with "fragile."
Soooo....paint or pastel? Mostly paint these days.