Panty liner malfunction, I need recommendations

So..  The front of the Playtex sport pantyliners ripped twice in two days doing nothing but wearing them, and the gel inside got everywhere. I'm scared to use them now. I love the u by Kotex barely there's, but they don't have enough coverage. I have very heavy discharge and sometimes they aren't enough. My period is irregular so I wear them in case I start, so that's another reason I like them more absorbant. Do you have any liner recommendations for daily wear? Yes, I know it's not good to wear them daily, but after 10 minutes without a liner my underwear has a huge wet spot. I have to use them. I'd prefer something not terribly expensive. I want to try the curves but they are the most expensive ones on the market at $9 for an 80 pack. Thanks for any suggestions!