Well I finally got around to installing both NEX seats and the extinguisher. The seats are not as snug as the Sparco Evo 2's. Although they are a vast improvement over stock as far as support. I've been using them every day for the past three weeks and found them to be very comfortable. They do make getting in and out of the car somewhat of a chore though.
At $300 for the pair with brackets how can you go wrong?