Foundry at the Edge

We are in the process of selecting a vendor for edge devices in an upcoming deployment, and my direct experience with Foundry is somewhat dated (1999-2000). If you are using Foundry NetIron or BigIron series devices to aggregate a significant number of EBGP peers in a production environment, I would love to hear about your experiences. Specifically, any details you can provide as to overall stability, convergence, performance, and support from Foundry would be greatly appreciated. Please reply off-list. If you are interested in a summary of responses, please send a note to me off-list. Best Regards, James Thomason