The recent arrival of the Sony-Ericsson P910 has made me think about upgrading my P800, but I've been reading more and more intriguing things about the Treo 650. However today's Gizmodo review of the Treo has tilted the balance back towards the Sony-Ericsson side of the fence. There are still things I don't like about the P910 though, notably reliance on Sony's MemorySticks. Perhaps I'll wait for the P1000.