I was actually going to mention that. I noticed some places the 2 x 4‘s aren’t but a couple cents more than two by twos. I guess it depends where you go and where you live. But if the price is about the same and I definitely use 2x4. I now on craigslist some people sell extra lumber that they had left over from projects and such. It gets a little hard then because sometimes you’re not sure what the lumber has been used for or what it has in it. Sometimes it’s brand spanking new though