I've got both the Philips HP1000 and SHP9000. They sound pretty good (especially for the money) but they have one, very big, downside: they are really fragile. I've already had to trash one HP1000 because it simply disintegrated.
The weakest link on the HP1000 are some screws in plastic. Effectively they have to keep the whole thing together. The screws are strong enough, the small plastic surface that keeps them in place isn't. The plastic panel eventually breaks into a million pieces and is hard if not impossible to replace or mend.
Look at the following picture and notice that I have loosened the screws I'm talking about. They are no longer resting on the plastic. The tie-wraps are now dealing with those forces, and this is much more reliable because it uses much more surface compared to the screws.
Another angle:
In the SHP9000, the hinge that swivels the can broke. I didn't really do anything to it (no excessive force), it just broke for no reason.
Here's how I fixed it after it was broken:
I've done the same to the other side. The little white tie-wrap is not entirely neccesary, but I installed it anyway so the same thing that happened to my old HP1000 couldn't happen to the SHP9000.
I don't know if many people are still using these, but if you do, please consider reinforcing them, seriously. It's really a shame they are so fragile, so you really have to take good care of them, because they sound really good..
And finally my thread appears. 
. I wrapped some zipties as well as filled the hollow points on the headband with hot glue and now my Hp1000 feels abit more sturdy; creaks less and clamps harder than before. The only thing that worries me now is the flimsy black plastic that holds on to the lower headband.
