What would be the best way to bond/load balance 3 DSL lines together (3 Mbs, I know, they are slow, but that is ALL that is available, hence the question). Right now I am using a TrendNet load balancing router, and it works, but I don't think its performance is all that great. I am thinking about using an old PC I have laying around the house and using PFSense, but I don't know how I could set it up for this purpose.
http://www.howtoforge.com/how-to-use-pfsense-to-load-balance-your-web-servers
https://doc.pfsense.org/index.php/Inbound_Load_Balancing
look these over