We got our first Core Hog years ago from the original builder who was from Arkansas I think. It worked like a dream and I loan it out to two or three guys each year. Original has a nice suspension that keeps the blade running smoothly on the green. When Par Aide bought him out they changed to the present design which is much simpler and I assume cheaper. I bought a new one and it's OK, but nowhere near as good as the old style. I have a core processor and a procore sweeper but the Core Hog plus a couple of guys at either end loading is better than having tire marks all over your greens. We can clean cores as fast as Jakes and now Toro aerator can make them.
http://www.youtube.com/watch?v=lxuwbN_nEa8"sorry for stupid audio!"