I use the silver Subscription of jEvents on my website for over a year now. I found the component is easy to install and configure, and if you come up with a problem the support is very good. Sometimes it's possible to have to wait a day or 2, but hey, these guys are just humans too :-)
After all, my Web site is running smooth with jEvents configured for 20 cities and 20 event categories and around 50+ events per day (and adding!).
I can only recommend jEvents to anyone in need for a good configurable calender.