I have a Miller helmet. It has four sensors, battery and solar power,delay feature (was a must), grind feature shade #3, auto on, and a very large viewing area. It's light weight and flexible and very conforming shape (not big and square). It was around $200 for a black one(customer/friend price),and you can buy replacement parts with no hassle (rubber gaskets, lenses, and head gear).
I welded every day though and coworkers bought the HF ones and would return them within a month. But we welded every day on the job.
http://www.millerwelds.com/products/...mets/elite.php