I need multiple toolbars on a page.  Sometimes up to 5.  With previous RadControls for ASP.NET, Telerik advised to use RadMenu instead of RadToolbar because RadMenu was faster on the serverside and clientside.  Is this still the case or should I switch to RadToolbar now? 

Here's the post comparing old versions of RadMenu vs RadToolbar:
http://www.telerik.com/community/forums/thread/b311D-kdtae.aspx

Hi Jacky,

RadToolBar "Prometheus" is built following the same technology as RadMenu "Prometheus". That said, if your concern is the speed, but you need toolbar functionality, you can safely switch to using RadToolBar.

Please note that the control is still not polished. We expect the official release in about three weeks from now.

Kind regards,
Erjan Gavalji
the Telerik team