My plants are in need of a transplant from the dixie party cups. I was looking at pots today at lowes and they are $4 for a 10" pot and $7 for a 12" pot... aka what a rip off. So I was looking online and found some "grow bags". Just wondering what you guys think of these and are these good for MJ? They come in 1/2 gallon, 1,2,3,5,7, and 10 gallon ones. Which one would be the best to where I don't have to transplant again? BTW, all sizes are under a dollar. Or should I just stick with plastic pots?