Lots of the Engage-niks have been given a home at the Guardian blogosphere: David Hirsh, Jon Pike, Brian Bivati and Linda Grant, as well as Harry Hatchet (of the eponymous Place) and Norm. Hope they're not going to be lured by the big Guardian audience into deserting their previous posts!
Also recommended: Brian Whitaker.
Engage has some good stuff at the moment, on conservative neo-realists and the "Israel lobby", on Ken Livingstone, etc. Both Engage and Comment is Free focus heavily on the John Mearsheimer and Stephen Walt article in LRB on the "Israel Lobby". For more on this, see Martin Kramer's Sandbox [via Snoopy] and Rosner's Blog [via Kramer].