Charles has just release a nifty plugin called
Echorus, a combination echo-chorus (get it?). It's 30 Euros, and that doesn't appear to be a special intro price. I've been playing with it for a few days, and I like it. Although much of what it does you could do yourself by inserting a chorus and a delay in series, it does have one unique trick not easily managed by a generic chorus + delay combination. Because the delay feedback loop goes back into the chorus, the delay feature can be used to accentuate the chorus effect.