Read the first few responses, question that's nagging me:

Why would you need a 7 pin sight for 20-70yrds? None of my bows need more than 5 pins to get out to 80yrds.

I do use an HHA single pin on one of my Mathews. LOVE this sight. I always double check visually to make sure it's set at the right yardage before I draw, and I DO practice with it set at the wrong yardage for my target quite a bit, i.e. say I have it set at 30yrds as a buck is coming into view, but he never comes closer than 40yrds after I draw. Rather than lowering my draw and adjusting, or trying to adjust under-draw, I just learn how to hold over properly.

Same difference really in using any multi-pin site. If you adjust a single pin site to the wrong yardage, you'll miss just as badly as accidentally using the wrong pin for the shot on a multi-pin.

My two 'primary bows' right now are a Mathews Monster with the HHA single pin, and a Bowtech Destroyer with a 5pin vertical. Which do I like more? Eh, hard telling really. I like both of them enough to own both, if that answers the question?