I have used both GoToWebinar and WebEx Event center, and I think they both work well with Marketo. One thing to note about WebEx event center, is that it can be a little slow when it comes to getting the attendees/no-shows synced into Marketo, usually about 1/2 a day.
Also, I had a colleague recommend that we do not use ON24. I have never used it myself, so I can't speak to the integration or tool itself, but something to keep in mind.
Hope that helps!
We're using BrightTalk for our webinar service and have recently integrated into Marketo (as opposed to direct SFDC integration). What i like about this platform is that we have the ability to update registration in real-time and transfer into SFDC campaigns, Marketo email programs, and RCA.
BrightTalk also offers a community of users so you can grow registration organically.
Hope this info helps!
+1 for On24 and ReadyTalk. Webex used to be good but with their recent changes in the API, they have become less user friendly.
I agree with this. I've used G2W, ReadyTalk, and ON24 - ON24 is definitely my favorite, but can get pricey depending on the number of events you plan to host. I found that ReadyTalk was great middle-ground between G2W and ON24 and would highly recommend them.