Merlin really is a very good piece of software. It is (probably) the best option as a serious project management tool on the Mac. I've used various tools over the years - I'm not a fan of MS Project but its fairly ubiquitous. Merlin brings a good level of "Mac-ness" to a PM tool. The design is clean, its easy to use and its increasingly sophisticated. Version 2 seems to answer a lot of the niggles/shortfalls I perceived. My only advice to the developers is don't add too much in without a lot of thought - its easy to add features and get cluttered. Think through the workflow. Great tool!