I bought a new box blade only because I could not find a good used one. PM me and I'll let you know where I got it. Hard surfaces definitely need a heavy implement. I've found that rippers/scarifiers make for great brakes! Doesn't take much to have a box blade with rippers down dig in and stall you out. This is where an hydraulic top link is essential (and one sets the rippers shallow).
Bush hog I got used. REAL used; but, it's near Medium Duty (one has to really research to fully understand what the various classes are here; there's no industry standard, but once you understand what's different in the different "classes" it become more obvious- look to the leading manufacturers to know what's really "heavy duty," "wedium duty," "light duty" etc.): it's about 1k lbs, 6', (90 HP gearbox) Bush Hog brand. $800, but I had to buy a new PTO shaft and get the tail wheel bracket welded (and reinforced): it's mentioned in my thread
http://www.tractorbynet.com/forums/kioti-buying-pricing/369313-my-nx5510h.html
Being indecisive just means that you're not being hasty. Read around in the Attachments section in this site, it has some great info to help provide others' experiences. Case in point, after reading up about PTO augurs I decided to NOT go that route and instead rented a skid steer with an augur: fencing project; I got the augur stuck a few times- had I not had the ability to reverse, as is the case with PTO-driven augurs, I don't know what I'd have done; yes, many people manage, but for me I had a big project and I had to slam it out quickly; I won't hesitate to rent power/the right tool for the job.