Yes. I tried version 1 and thought it was good, but not good value for money. 2 added enough for me to buy it - see my comments at http://lightroomsolutions.com/silver-efex-pro-2-2/
(they fixed the bugs). One big plus, for instance, is the selective colour adjustment in control points which keeps some of the original colour. Again, you can do it with layers in Photoshop but it's great for ease of use.