It is a Woods RB72. Boy did it get mangled this year. I rigged up a snow pusher for the front end as I have spread out parking areas to plow out. The blade is for the 150' driveway part. Your HBL has good moldboard height. Where I used to have need for the rear blade for dirt work, I do not anymore so I didn't want to spend on a heavy duty unit. Unfortunately, it's these units that have the tallest blade height which is advantageous for snow work.
The Rhino 5006 has a 16"height, (which I think Dirt Dog makes for them) seems like a nice one but it too is over a grand after shipping.
The best "value" at $700 seems to be the EveryThing Attachments Deluxe blade however this is using a 2 bend blade rather than a rolled.
A Woods RB is not enough blade for your tractor which I guess you learned. The blades rated for 40hp are not that heavy duty. If I was buying a blade for your tractor I would get one rated for a tractor up to 75hp. You can probably get a 6' blade like a Tuffline GB4 for $1200 or 1300 and your tractor will not hurt it. You might get lucky and watch around and find a nice used heavy duty blade before next winter. I am not very happy with my Woods HBL84 it has a lot of slop in it.