Question about Philips XC8147/01 SpeedPro Max Aqua

I also find it practical and good for quick application. But for more stubborn things, it's better to go through it twice. I find the fact that it also sucks in the front mega practical in case something has been missed.

Not particularly. But sufficient for small, quick cleaning in between, when there are only a few stains and dirt. A good solution for that.
To put it bluntly, you spread the dirt very thinly, because the mop is not washed out in the water as with normal mopping.
normal mopping up.
There is no way around thorough cleaning with a bucket.

As thorough as a mop. Sometimes you have to go over it twice...