Pros: Playful, easy to carve, light
Cons: Probably stability
I just bought these skis. I've skied twice this season, at Snow and Wachusett. I concentrated on the mid- to high-eighties waist skis in the "frontside all-mountain" category, whatever that is! I did try a couple narrower carving skis, but nothing wider. I was looking for something that reminded me of the stability and edge grip of my favorite demo last year, the Nordica Steadfast, but a bit more playful.
This ski was as close as I could come, and I demoed around 10 skis. It gives up a bit of the Steadfast's locked in feeling, but the gain in playfulness was well worth it to me. I'm an upper-intermediate, can carve on blues and sometimes blacks if the conditions are good. I still feel handicapped by my learning at the end of the stem-to-turn era, and I've been looking for a ski that will help me lose my skidded transitions and at the same time be a fun stick to take anywhere on the mountain (at least, anywhere I'm comfortable). With the E84, I believe I have found it.
If you are an upper intermediate skier, or just a very good skier who doesn't feel the need for mach speeds and a ski you have to always be "on," I would highly recommend this as an East Coast one ski quiver.