The grizzly is a great bow, as you can tell by the number of them in circulation, Mine is a 1970s model, 1976 by my best guess. I have been shooting it as my go to bow for about a year now. I love how light it is and its simple clean lines, it fits well in my hand and points naturally for me.
Some draw backs are that is does have some hand shock compared to heavier bows, some people dont like how the front of the grip is square instead of rounded.
My main issue is that I notice a bit of difference in power when in I shoot in really hot weather, I'm not sure if this is the limbs or the b50 string material or a combo of both.
I'm not sure how the modern production models stack up but all in all think the grizzly is a classic bow, its hard to go wrong with one.