I picked up and toned a bunch of cheap acrylic primed canvases a few weeks ago and I'm finding that they're really helping me alleviate the pressure of making a painting. I highly recommend anyone who's going through some artist block to pick up a large pack of canvases and just have fun. Of course, I prefer an oil ground linen (preferably Fredrix 125 DP Kent) but I feel a certain amount of anxiety that comes with painting on a really nice canvas. I want it to be perfect and then it inevitably ends up way too timid and far from perfect and.
I don't feel this pressure when I use cheaper materials, I feel more confident because it feels like what do I have to lose? I try to remember that my supplies are meant to be used and saving paint won't do me any good.