Dex = definitely improves bow damage.
I do disagree with the recommendation to just stick with Runed Oak bow. Yes it's a good value, not too expensive, reasonable range at 125, and a good ratio.
Why do I disagree:
- If you are using it to pull, i.e. mainly just a single shot: Get yourself a 150 range, 25 damage Rough Darkwood Recurve bow. Better range, and biggest hitter in the game.
- If you are using it to DPS, i.e. shooting repeatedly: Get yourself a 150 range Shaped Darkwood Compound bow. Extra range, and very similar DPS ratio to R.O.
Full disclosure: My main (Azleep) may be the only 202 skill fletcher on Green (that may not be true, but I'm the only one I see auctioning to sell darkwood bows in the EC tunnel), and I make and sell bows for fun, and nostalgia really (there's a whole story that goes with that, which I won't inflict on the reader unless someone expresses interest). So you can take my comments with a grain of salt if you like. But I think my comments are objective, accurate and valid.