I only have access to an inkjet printer in my classroom. I searched for a highlighter that didn't "run" the ink as I marked sections after I printed a paper for a student. Highlighters work great on laser print as well as copy print.
I have used liquid highlighters by other manufacturers and the Staples brand works just as well or maybe even better. As often as I use these I thought I would be buying a pack every other week but they normally last me about 2-3 months. Even when the ink looks like it's going to run out you can still get a lot of use out of it. The only time I had one dry out on me is when I left the cap off for 2-3 hours and after that I was still able to get it to work! With the price you can't go wrong!
The colors are not so dark that they obscure the text you're highlighting. The ink does not bleed through to the back of the paper. I find them a good highlighter to use as they are comfortable in the hand.