I agree , never saw the big deal with the Best press ... lots of $$$ for spraying fabric.
You may find the Stay Flo concenrate to be to your liking.. its about $2.50 for about 1/2 gal of concentrate.. dilute to your needs. Keep your Niagara bottle to use with the concentrate.
I like to custom mix my starch .. some projects .. specifically those with really tiny pieces.. I use it full strength .. it makes a huge difference , alos when paper piecing keeps the larger pieces from folding back on itself when you put it under the needle .