SB 400 alternatives

First of all, I have a SB600 for use As my primary flash. I like it. I am learning to use it. I won't be getting rid of it. I don't want advice on why I should always use it.

I want a 2nd flash for when I don't want to take the big flash with me. Generally, snapshots of my daughter and kids at family get togethers. I want enough power to shoot, fast recycle time, and easy to use with my cameras flash options.

I tried a compact Sunpak and it is not working worth a flip. Very slow to recycle even with fresh batteries, it doesn't do a good job with matching the metering. Christmas photos would have been a mess but for Built in flash.

My two cameras are a D7k and a lighter d60. I plan on taking the small flash for travel with either camera.