I have the PVC frame and use it quite a bit, but still like a hoop too. The largest quilt I have done in a hoop is about 64", sometimes I like it where I can put my feet up and watch tv. If you get the PVC make sure you get the leg extenders to put it at a slant. If I were using a hoop, I would use an 18" round or my preference is an oval. I have 5 or six different styles of hoops. The oval and 18" also go on a stand up frame. Jean Brown who is a famous hand quilter does all of her quilts on a 14" hoop that has a lttle base that allows it to sit on your lap, I have it too and like it a lot for small projects, although she does everything even King size. She has a web site. I would love to get a square 18" makes it easier for borders. You have a lot of options, you have to decide what is best for you.