Gary,
I can tell you that it is way better to spend a bit more on a good helment than to risk getting flashed to save a few bucks. I had a HF and kept getting flashed and it really affected my weld quality due to the fear of getting flashed and looking away when I started an arc. Now I have a Miller Digital with the large window and 4 sensors and I dont get flashed and that makes a big difference in where I start and how my completed welds look. Welding Suppies at IOC had the on sale with a bag and gloves not too far back and they put em on sale pretty often, so if you have a bit of time you can shop around and find a good comfprtable helment that fits well and isn't too heavy with a replaceable battery and multiple sensor. Definately worth the time and little bit extra coins. The options to look for are adjustable delay, grinding mode, replaceable battery, headgear replacement parts availability and maximum number of sensors. Switch times are also kind of important, the faster the better is always good. The digital Elite was the best value for my money when I was buying a new helment, but Optrel and others make a comparable helment too.
Bob