(See my comment below for context, currently undergoing chemo). Just wanted to comment that I'm a huge fan of Genentech. They developed Ritiximab (Rituxin) which I'm currently getting treated with. It's a monoclonal antibody as you mention and it's improved outcomes for my condition (DLBCL Non Hodgkins Lymphoma) by around 15%. It's given in combination with traditional 'CHOP' chemo and is called R-CHOP. It's also insanely expensive - about $5K per dose and I get 6 doses over 18 weeks.

I found my local doc was awesome when I got a second opinion from Mass General and then moved treatment to a major regional center in my local town. They moved very quickly and were cooperative. So didn't have a bad experience there personally, but YMMV.