So I use photoshop CS3 and it doesnt seem to do a great job of noise reduction when I shoot a 3200 with my 50D. So IM looking to get Topaz noise reduction 4(whatever there latest version is). It cost $80 dollars and the bundle cost $180. So my question is... Is it worth it for me to get the bundle or just the noise reduction. Also is it necessary to get the bundle if I already have cs3? What can Topaz do that cs3 cant? Thanks!