I come here daily and lurk on the forums, see all the posts about the dust particles under the screen, scratches on the screen/bezel, and yet, I beat the living heck out of my 8700c and thankfully not a problem yet.
I've had the device since November 28th and dropped it at least a dozen times onto the ground (tile floor in the office, carpet at home, down the carpeted stairs, garage floor (that one the battery cover came off and battery popped out) and even just a few days ago into about a 1/2" of snow (face up thankfully) when I was getting out of the car. (Wonderful Midwest weather!)
The case is scratched to all hell, but thankfully, and knock on wood, there has yet to be seen a speck of dust (at least that I can see or anyone else can see) under the screen or a scratched screen (no protector on there either, stock plastic holster still).
The corners of my unit look like a dog chewed on it from all the times it's hit the harder surfaces (garage floor and the parking lot), but nothing rattles, the thing still works and doesn't have any issues that have come up yet.
This unit was provided by work, and being the the one who sets these up, my boss basically gave me carte blanche with them, if it breaks, I'll just order another one, hell we had a guy drop his 7100g off the boat into Lake Michigan, he didn't bother to go after it however and we got another one without thinking twice.
Call me a bit unethical here, granted I know im basically spending someone elses money if this thing breaks or gets damaged and I just order a replacement, but its not like I drop this thing on purpose to test it and see how well it stands up to different situations (although I might since we do have an extra one here that no one will really miss
). I use it like it's meant to be used, and dont think twice when I drop it. I pick it up, brush off the snow/whatever and put it back in the holster.
I look at it like it gets used every day, theres going to be scratches on the case, bezel, maybe even the screen, but hey, it comes with the territory if you ask me.
I guess I should consider myself lucky that I havn't had any major issues like some of the posters here, but then again, I'm amazed it's lasted this long considering what I put it through.
to Blackberry and RIM on what I consider a great device, and on par durability wise with my previous ones (6280, 7290 and 7100g).