I use spike it it is good stuff but it is not bad for settling is much but you still have to shake a bottle or container the good thing about spike IT is that you can reheat it several times before it starts to yellow also it will clear the bubbles out faster by letting it sat for a minute or two before shooting but I think all the plastic out there you need to stir them I believe they all settle I have used 4 different plastics in spike it was the best.