Janine-More than 1/2 thr tooth left and a 2mm ferrule and I'm probably not going to use any posts or pins, just a bonded core.

I'm old enough to have once used cast gold post and cores which usually necessitated some signifigant canal enlargement and too many fractured roots later on. My experiences with srew-in posts sound like they are similar to yours. Fiber cores are nice, but nasty to remove if they snap off, and pins, well I've found a lot of uses for TMS pins but none of them involve restorative dentistry, at least not anymore. They cause too many fractures, too much discoloration (at least wrt the old nickel-based ones), and I've seen too many misadventures with the leading edge either inadvertantly in the gingiva or in the pulp (they do work good for reinforcing intracoronal splints, tho).

Daylia-when my patient's have your kind of problems and I'm the one who did the previous work, I feel like I am one of Earth's lowest life forms. But,if your dentist looks hard enough, usually there's a path somewhere to be found that leads to a good conclusion.
I hope you find one... Soon.