I've updated the Gear Guide to include a more information on how I use each piece of my kit for concert photography. In particular, the notes for each lens feature some specifics about when and why I'll reach for a given hunk of glass.
I've also added a bit about the SanDisk Extreme IV 4gb CF cards that I recently bought to replace my Ridata 150x 4gb cards. These new cards are working beautifully with the D3, and I've especially been enjoying the faster transfer speeds thanks to UDMA and Firewire 800.
I'm in the process of writing a general guide for concert photography and starter lenses that I hope to publish soon.
In the meantime, if there are any suggestions you have for the Gear Guide or if there are new features you'd like to see on concert equipment, let me know.