Mixed impression for a funny broom

It is with some regret that I have to say that this camera is disappointing. It's not really that does not suck: this is more than a brush of a vacuum cleaner brush, but ultimately, it's pretty effective.
But in contrast, there has faults that I find bothersome or very bothersome to wear.
1) of the vacuum cleaning system itself is not very practical: indeed, it easily removes dust container, but it is however difficult to remove the dust that is in it, even by removing the filter. The grids interfere, and one is to draw kitties through, which is not a must.
2) often found the device stuck in obstacles: the curtains (swallowed by the robot), the son (including cables and power supplies), or even my chairs, which are just the right height to let the roomba and stuck away
3) I've seen it happen once the virtual wall, and I was lucky to get it back before it rushes down the stairs: I do not know why ...
It's a shame, because the device is very funny to see it work, and it works pretty well. But it seems to make it run all day, you will recover more often impeded on its base. The number of times I did, once he returned. And my house seems not exceptional ....