Originally Posted by
Mark Roderick
I've never used either, but have used a biscuit joiner for many years. Aligning the long edges of boards - a table top, for example - is a common woodworking task. You could do this with a Domino but I don't think you could do it with the doweling tool, at least not without a lot of fuss keeping the hole spacing perfect on both boards. Something to consider as you make the choice.
For that matter, you might just buy a high-quality biscuit joiner, which (I think) will do just about everything the doweling tool will do and is much less expensive than the Domino.