I borrowed a Pearson Hunter from the pro shop last year while I was waiting on a new bow to come in, and it was a very pleasant bow to shoot. Almost didn't want to give it back because I liked it better than the bow I'd bought.
I've got a Pearson Colt that I've been toying around with for the past month or so, and I like it also. The grip feels a little funny in my hand though.
I've owned a couple of Grizzly's and I just wish my draw length was 4" shorter because they're nifty little bows. Pulling one of those boogers to 32" will certainly teach you the meaning of finger pinch.<img src=icon_smile_wink.gif border=0 align=middle>
Have not shot the Apex or the Black Hawk bows.
Based on what I liked about the three bows, I'd take either the Hunter or Grizzly, preferably both. But I think the Apex was Pearson's top of the line bow at one time, so I wouldn't hesitate to take a hard look at it too.