A few of us on here are preparing for or have recently had dbs. I have a blog about my experiences so far, www.debversusparkinsons.wordpress .com and there is another chap who had the surgery a few months ago , www.dbsanobrainer.co.uk.
These may be of interest to you. There are also frequent postings fom gus and bettyblue who are both very helpful. Gus is a couple of years post surgery and bettyblue is just starting on the route to dbs but has years of experience of all kinds of Parkinson's meds. Hope these folk don't mind me mentioning them but they have been of great help and support to many of us on this forum.