I only used Silver Efex. It's more flexible and powerful than basic Lightroom and more specialized than Photoshop. It's great for black and white work, it is a tool specifically made for photography, not a general purpose one.

They are complementary. I use the suite with Lightroom all the time. In general I find them super easy to use and they get me the results I want.

I've had them since v.1. They're the best photo filters by far. Very usable.

Lightroom is both an editor and a photo management collection tool. The Nik collection is editor only.

it is not a lightroom replacement nor a photoshop one. It has really good filters. my wife and bought it.

Also interested to hear