The type stabilizer is what determines the outcome of your hooped project. Also the type fabric you use also determines the outcome of the project.
I use to think you just put the fabric in the hoop and have a go at it. DOES NOT WORK!
I took some classes earlier this year locally and found that there are just as many thicknesses of stablizers from water soluable to not as there are fabrics to use in the hoop and if you don't use the right size weight for each project it will not yield good results.
Many projects just using a back tear away stabilizer is not enough. You also need to put a water soluable one on top.