PH Test, Whats a good one for watter?

OK, I have been using the "3 Drop pH test kit" and that works for clear water (no nutes added) but once you ad any nutes like molasses or anything that changes the collar it sucks. So my question is what is a good test kit (name of the test kit and where you can get it please) that you all use. Thanks...

get a ph pen, with the ppm aswell... dont make the mistake i made

OK, that sounds better that what I'm using. Where did you get it and how much did it cost? Thanks...

140 dollars for a great one.. will last you years if u go stead with it