I've used webmin, but found the management of virtual hosts/apache to be quite clunky, and on a low-end (256mb ram) VPS it's a bit too heavy to run all the time

I've used webmin, but found the management of virtual hosts/apache to be quite clunky, and on a low-end (256mb ram) VPS it's a bit too heavy to run all the time. However, if you've got multiple VPS, and multiple webmin installations, it does a nice job of letting you tie them all together, for example having a separate VPS for mailserver, webserver, etc. I'm looking forward to seeing some of the replies/suggestions this question gets!