What is the best marketing automation software to use for a SMB?

One of my clients just did an evaluation and decided that while Marketo is robust it was more than they needed and decided on Hubspot which was about half as expensive as Marketo. As Alan mentioned there was also a lot of time investment to get the most out or Marketo. This client is just starting its lead gen program and has only two people working on lead gen. The team also evaluated Act-On.