Message is that like an iPhone, a Blackberry a Garmin or many other lcd screen devices, they are simply not unbreakable.
If you are wanting something that is rock solid, I would suggest perhaps a new product due out early to mid next year that may fit, but can say no more at this point. (Emphasis on may fit!)
Keep in mind that every time something new comes out, a new reason why it isnt perfect is also born at the same time. This will result in you waiting forever !
I appreciate your feed back, and I'm certainly not trying to knock Garmin or their products. The feedback on your company and Garmin is very positive. To draw on your analogy with the iphone it is a valid comparison, but I have a nokia which is dust proof, water proof and shock proof for precisely the reason that me (and my children) don't tend to mix well with expensive but sensitive gadgets. The problem is mine, not the manufacturers! If I had an iphone god knows how many screens I would have gone through by now. The Garmin 610 may be a perfect product but I am not a perfect user!!!
The product you allude to in describing something which is rock solid sounds interesting. My personal preference in gadgets would be to compromise on a few advanced features if the product was really solid. I realise this doesn't suit everyone but I would happily pay a little more for the additional protection such devices may offer. Based on this hint I am more than happy to sit tight and wait. From personal experience I can't think of one gadget I have bought over the last 15 years where I have used every feature it has. I can list several of these devices I have broken though