In reading your history, it sounds very similar to mine as far as PSA and free PSA and the decisions to be made. My PSA bounced around a lot before my positive biopsy, and my urologist didn't think that was typical of PC. But yours is at least the fourth story I've heard on this board that is similar to mine in the PSA bouncing like crazy. The question is whether to look at the 1.55 to 4.26 change or the 3.06 to 4.26 change as being the most important from a PSA velocity perspective. I had the same question, and in the end, it didn't matter, the biopsy trumped the PSA. As far as free PSA, as I've commented on another post, I don't think most practicing urologists go the biopsy route for low free PSA as long as the total PSA is reasonably low -- even though research shows they probably should.
Your biopsy shows a significant amount of 3+4 and 4+3, as mine did, and yes, my percentages were also all over the map. I've been told this is for two reasons. One, a cancerous spot may overlap between two portions of the prostate, so the biopsy will have different percentages showing up in different portions. Two, because PC is a multifocal disease, that is, it's not just one cancer spot, but several of them in different portions of the prostate.
In my case the radiologist told me that if I chose seeds I should also have external radiation due to the amount of cancer that had shown up on the biopsy. That convinced me to go the surgery route, and I'm glad I did, because the pathology report showed that the cancer was less than 1mm away from leaving the capsule, and I had some spots of 4+4. So far so good, with zero PSA, but would I have been just as well, or bettter off, with radiation? I will never know, but I wanted the best chance of having the cancer out, even if it meant some more immediate side effects.
It's the toughest choice I've ever made, and I'm sure it's just as tough for you. Best of luck and, as others have said, don't put too much weight on the insurance guy, even if he is well meaning. If you do go the surgery route, my advice is to have it at the earliest possible time that your surgeon is available. No sense in waiting around.