Here is the link to the one i'm considering. There are definately more heavy duty ones out there but I didn't think it looked too bad.
United 566HD Heavy Duty Box Blade 66"
See what you guys think. I'm looking at the 5 1/2', which is about 405 pounds.
don,t want to rain on your parade but looks too light to me and the 405 # wieght wood suggest that too.My 5 foot blade is just at 560 pounds.Hope this helps Dave