I've recently resorted to buying pre-printed planner pages from Franklin Covey, but the layout isn't exactly what I'd like. I'd prefer to print pages I've designed myself or via the DIY Planner Dynamic Templates App. To do so, I'll need an inkjet printer paper that stands up well to fountain pen ink, is heavy enough for comfortable 2-sided use (24+ lbs.), and has a very matte (non-shiny) finish for easy reading.
What type of paper would suit this application best?