yes, as said here, there's very different solutions out there, but it depends on what you really need.
I went with 2 600EX's this week to replace 580's and holy mother of god, this is perfect if you're looking for ETTL speedlite triggering. Very happy to ditch pocket wizard.
And it is expensive, but not compared to separate 580EX II's + pw.
If however you're looking for a more simple (manual) trigger, you would be advised to try other solutions. I also use elinchrom and for that I have the skyports, also with one universal trigger so I can combine, say, a quadra with a 600ex on manual.