After more than six months of using this phone I thought I should update my review and downgrade my rating. First, here is my original review after having the phone for a few weeks...Bottom line: This is a terrific pda-phone combo that compromises very little to deliver both in a single, well-integrated package. It is the iPod of PDA/Phone combos. Elegant controls, easy to use, small and stylish.The 600 is dramatically faster than the 300, the five-way navigation control makes it a truly one-handed device in most circumstances, and its battery life is vastly better than the 300. But why Handspring chose to add bulk and (presumably) cost by incorporating a 0.3 megapixle camera is beyond me. They should have dumped the camera and saved a few bucks.Here is, from my perspective, is the rundown of the Great, the Good, and the Not so Great features.Great:Speed - the thing is fast. In less than the blink of an eye it can search through 2,000+ contacts and get you the right phone number. Almost everything happens instantly.Five-Way Controller - almost 80% of what I do is available at the touch of one button and a flick of the navigator. All with one hand (or one thumb to be more precise).Software Integration - unlike the guys in Redmond, Handspring really knows how to integrate hardware and software. It is completely intuitive. I still have not needed to crack open the users manual.Battery - The battery life on this is a genuine 4+ hours of talk time. Not the best on the market for a phone-only device, but terrific for a PDA/Phone combo.SD Card - a cheap, effective way to expand the memory and you can load specific programs of databases onto it.Speaker Phone - maybe should go in the "good" category but the loudest and clearest I've ever had on a mobile device, so by comparison it's great.Size & Shape - much better than the old Treo, handles like a phone but small enough to comfortably pass the shirt-pocket testReception - this was a surprise, but I get better reception and signal strength on the Treo than I have with any Sprint phone.GoodScreen - bright and clear but not the highest resolution on the marketKeyboard - small but surprisingly usable and with solid, crisp key action.Compatability - most of my old software works fine but Eudora Mail has some quirks that make it hard to use and RecoEcho does not work at all.The Not So GoodCamera - why in the heck would you put a super-low resolution camera into a business device? I do use a digital camera from time to time in my work (I capture white board and flip chart scribbles to use later) but the 0.3 mp camera is too low a resolution to make this effective.Headset - lame, cheap, poor sound quality. Plan to upgrade this out of the box.Overall, the Treo 600 is a great device. But is it worth the high price? If you are still carrying around a separate phone, PDA, and you have to crack open your laptop everytime you want to check your e-mail then this is worth every cent. And in my view, there is no better choice on the market for a fast, portable, easy to use combo device.UPDATE:In the past seven months I've had the phone replaced once when it simply stopped working and now the replacement is broken again. Like other reviewers have said, the speaker just stops working. No explanation, it just stops. Now the thing will only pick up the network when it is plugged into the wall socket. Weird. And, of course, the Palmone customer service is rotten and hopeless. Sprint has been pretty responsive. I'm going to go into the Sprint store again and see if they can help. But as others have noted, there is just no excuse for a device this expensive to be this unreliable.So new bottom line: Great when it works but not reliable enough to make it worth the cost.