I've been using LVS for a while now and have been pretty happy with it. I found it easy to use and maintain. I've been using keepalived instead of heartbeat tho

I've been using LVS for a while now and have been pretty happy with it. I found it easy to use and maintain. I've been using keepalived instead of heartbeat though and I'm not so sure I would recommend it; I've had a little trouble with it being too aggressive in taking servers out of load balancing, though some of it was just config. I'm curious to try heartbeat.