Can anyone recommend good project management software for a small web development company?

Hi,

I work for a small web development company (3 team members) and we are looking to implement project management software. Can anyone give recommendations? I have been looking around at the various options and I am quite overwhelmed at the moment.

I require the following:

• Ability to handle multiple projects easily. Ability to see an overview of all projects as well as an overview of each project.
• Ability to schedule tasks automatically based on resource availability across all projects (as tasks often change). This is resource levelling I believe. 
• Tasks to be flagged and highlighted if overdue.
• Each team member to be able to see exactly what they need to work on on a particular day.
• Ideally we would like a web based solution as we all work from home and need instant access to all information.
• As I manage all the projects I need to see a quick overview of them all.

Any recommendations would be most appreciated!

Are there any project managers for web design/development companies out there that have implemented project management software already? Any tips or information? Thanks.