I'm looking for a simple project management app that performs task scheduling, along the line of Merlin or MS Project, but no where near as robustly. I don't need to deal with other (human) resources, but I work on anything from 3 to 6 different projects at a time. What I'd like is to be able to input deadlines and tasks, and have a schedule suggested to complete them.

I do technical work, but I don't think I need anything specifically for software development, especially considering I do plenty of other kinds of things, like graphic design and social media PR.

I'd really like this to be dead simple, as simple as possible. Suggestions? OmniPlan, something web-based? Definitely cannot afford anything too extravagant, really looking for something under $200.

Thanks for your input!