I don’t have Hall or Sweet Jenny or Sugargate so I can’t speak for any of those. I do have Lane and Triumph. Lane is good but I don’t think it would give you much variety from Ison’s and Black Beauty. Lane ripens very early but that’s about the only reason for you getting it.
I love Triumph— it’s my favorite bronze. A close second would be Late Fry but it is really late ripening. Triumph to me it has its own unique flavor…kind of a “wine-y”, maybe “musky” type flavor. It has been vigorous and productive in my zone 8a. It’s a mid bearing for me.
I really like Supreme but my Supremes don’t ripen fast. They are dark and good in a mid range but I like to let them get VERY ripe and it seems to take them a long time to do that. They are fantastic and huge though! I have heard enough good about Sugargate to make me want to try it.
Darlene is good and she gives big grapes but she is very very fruit stingy. If you get a Darlene plant it right beside a male and then you might get better production. She puts a lot more into growing her vines than in producing fruit. Like I said I really know nothing about Sweet Jenny.
PS Paulk is supposed to be good but I’ve had nothing but problems with my vine that doesn’t want to grow and gets diseases!! No fruit yet to taste.