Best service for marketing a rental to multiple sites?

[Quin Weidner]

Hey guys,

I'm looking for the best service that will advertise my units on multiple sites. I've traditionally listed myself on Craigslist, but I'm sure you all are familiar with the hit-or-miss responses you can get there! 

I'm looking at a few sites like "TurboTenant" which posts my ad on various sites.

I know many of you have probably found some really good programs out there doing this, and I'd love any suggestions!