Well, I am a Brother junkie I guess I have 4 machines and serger from Baby Lock. I bought 2 from Walmart and 2 from a machine shop. The one you are speaking of sews fine and a great starter...I am spoiled by my other 3 as they have more features. The auto threader from on the two at Walmart have stopped working but other than that...they are great. The thing I liked about Walmart is that I could try it and return it if I didn't like it...here our sew shop doesn't do that...
The brothers are easy to use and to learn on. I tried 7 machines before I settled on the brother of which you speak from walmart. Good luck...go try many out everywhere. My sew store told me not to buy Walmart either but I think it is because she wanted to make the sale and it is true they could repair it rather than sending it off or taking mine to them for a fee...but I have had no other trouble from my four...the one I bought from them used had to be revamped right after I got it...so...
Good luck.