You buy what you can afford.
I have never bought lqs fabric as it is over 9$ a yard. I only buy from walmart or joanne. They work fine for me.
Most people say that the quality for lqs is alot better. and one day I will try it. But right now while I am new to this I stick with the cheep stuff. I inspect all the fabric I am buying for the feel and weave of it. Like Walmart has some new 1.50 a yard but they are really see through and really really stiff. I could see that with one washing the fabirc was not going to look the same. So I skip it.
The other reason I shop at walmart and Joannes is that they are close to me. The lqs is a town away not to far only like 20 min and in the other direction that we never go.
So buy what you want. If you can afford the lqs I have heard that is the way to go. But if like most people now days and you have to watch your pennies dont let Walmart or Joanne fabric stop you from a wonderful hobby