I'm sorry about your diagnosis and that you have to switch oncologists midstream. I also had metastasis to the bone and was told that I would be on treatment for life, or at least until it stops working. This can be really tough to come to terms with.
That being said, I believe that one of the most important relationships you have right now is with your oncologist. If you are not comfortable with this person, do seek a second opinion.
Also, be very wary of what you read on the internet. Make sure that they are from a reliable source (such as Mayo) and that they are dated very recently. Cancer treatment technology changes very rapidly, so much so that articles as old as a couple of years can be pretty out of date. One good source is cancergrace.org - an online community of patients & oncologists. There's quite a bit there about treatment.
Hang tough. You're not alone.