how aggessive can we go?

I've been at this for 4 years now. My Dr. says I'm past the point of a cure and we are working on containment and quality of life. Since my re-ocurrence I have taken Navelbine (this is my third time) taxotere+carboplatin and herceptin and xeloda+herceptin. I have good quality of life so I shouldn't be complaining. This last week is the first time ever that my blood count was too low to take my navelbine. The other two times I took it, I took two weeks on and one week off. Now I have to go to two weeks on and two weeks off. I was just wondering if there is any cons or pro's to treating this more agressive instead of just trying to contain it. Is there something out there more agressive then what I've taken? I'm tired of this cat and mouse game, I'd like to really give this cancer a big zapp! I am going to talk to my Dr. this next Friday and see what he says. Anybody else's Dr, treat their cancer this way, containment? Patty H