All spider are fast, just some spider take the speed to new levels.

But they are not that bad, as long as you have a large enough tank and hiding place the spiders will not run out of the tank (any you can deal with a spider when it does that so it is not that bad) so if you want one you should one!
They also have stunning colours(plain but stunning) as the get bigger.

The two I have are not agro they more hide away from me as soon I open the container!
never have had a run out of the container.