Using the home brew, you can get some great results... but there isn't really a comparison to fina made from powder and fina made from the pellets.
There isn't really a way to filter out all the shit that is in the pellets... you may think you are... but you really aren't. I would suggest finding an independent underground lab that has that product on it's list and going that route, over making it yourself... it would be a far superior product and more than likely would be cleaner..
However, if you just want a quick, cheap fina product that will yield some fairly good results... making it at home probably isn't a bad idea... but the chance for having a polluted product is much higher.
C-ditty