For a home lab, any disadvantage to using dynamips for the routers?
Welcome to the forum!
Dynamips seems to be only getting better.... so other then maybe avoiding the latest emulations until others shake out the bugs, there really isn't a downside to using it. It is nice to have some real routers to try things out on if you think you've found a dynamips bugs.
I've got the home hardware lab, but I also use Dynamips and Dynagen for CCIE Lab Exam preparation. While I'm preparing for R&S I've got my Security hardware wired up with Dynamips routers (and a few more real 2500s).