Are they secure, they look pretty easy to get out of?
The one I have can be tightened as much or little as you want, I personally am not a big wiggler or try to get out of it because I don't really want to =) the pressure keeps it secure enough but if you partner is an escape artists I would go with something with cuffs.
If you are looking for something with cuffs and soft on the wrists but secure, then I recommend the Tracey Cox Beginners Bondage set available from LH . Its a very flexible set and has many uses. Securing someone to a table of chair shouldn't be a problem . It has been designed for use with beds so a table shouldn't be a problem . If you want to secure the waist though then some extra gear may be needed as the bondage set consists of a blind fold with 2 arm and 2 leg restraints..
She does like to put up a fight and likes me to be really rough with her, that's why I want to really secure her and tie her up so there is no escape
Then you might want to look at something more with cuffs vs. a slide rope.
Spread eagle on the bed , leaving her exposed and helpless