Had it done recently and pain was minimal. Just needed a couple of top ups of local anaesthetic during the process when it twinged a bit.
As others have said, it's going to be the best option. Pricey though. In my case I thought I was going for a normal filling, then he found something he hadn't noticed the last time and I ended up having it done without much prior warning. Probably better that way, no time to worry about it, but a disappointment at the time. I now suspect others will go the same way as they reason for their occassinoal twinge is finally uncovered. Not happy about it, but that's what happens as one ages. To repeat it's going to be better than the alternatives of leaving it, or removal.