Vespobuteo - I've not attempted many bif shots as yet. It's proved ok with a few trial shots of passing corvids and gulls, finding focus quickly and staying in focus for a series of shots. First time i get the chance to seriously test it out with e.g. feeding terns or a hunting hobby on the Humber shore, I'll have more real idea, and I'll let you know. Hirundines or flushed passerines will take a better man than me with current m43 cameras.
Hobbes2 - I received it last month from WEX, after being 'on the waiting list' there since early spring. The situation still seems a bit chaotic following the dreadful earthquake in Japan last April. I was told that even a likely available date could not be provided, then before the day was out, one was suddenly available. If you're on a waiting list somewhere, I wish you a speedy resolution - it's definately worth the wait.