Originally Posted by
DanK
You certainly don't need them. The question is whether they will help you enough to make them worth the expense and bother. The answer is yes for some people, no for others.
I personally do most of my processing in LR and don't use many plugins. I use LR Enfuse for exposure blending, which is an alternative to HDR. I recently bought the NIK plugins because they were so cheap. Having experimented with them, I think I will probably use Viveza some, but the fact is that I have yet to use any with an image that I have edited seriously. I used to use a plug for noise reduction, but I find that NR is now so good in LR that I very rarely use it.