Are you going to use it for a couple of hours once a year? Are you going to be using it regularly?
I use mine a lot and actually wore out an old one. It is ground engaging so they get beat up pretty good. On my B2650 for my replacement I went with the EA,
XTreme Duty Box Blade, Grader Box, Box Scraper, Made in USA by Everything Attachments for Utility tractors with 30 to 70 HP and Free Shipping
www.everythingattachments.com
It is built much stronger than the box store units. I have been very happy with it and it is wearing well.
I will say on the box blade the best feature is usually on the tractor and optional. A TOP & TILT kit.
With the "top" you can adjust the "cut" on the fly. So going over a sharp hill where you would usually leave material in the valley, scalp material off the peak, and again leave material in the valley on the other side, you can adjust that on the fly.
With "tilt", you can "cut" a crown into a road, create slope, pull material from ditches etc.
With the T&T, I pick and go with any of the 3pt implements using my QH. It doesn't really matter what ground they are on, you can adjust the angles from the seat. I never leave the seat changing implements unless a PTO shaft needs coupling.
And for the ti-fecta, get a 3rd rear remote for power angle on rakes and things like that.