Not sure how many of you use
Vivino - but when I am not sure, I tend to get (an averaged) second opinion from the collective reviews:
http://www.vivino.com/wines/9283039
When I read the Vivino reviews now, I can see similar themes coming out that suggest JH and others are fairly close to the mark (although JH appears to make what sounds like a fairly herbaceous, tart ending wine sound pretty good!).
So from 25 reviews, the Penley 13 Cab
scores 3.5 out of 5. That's not too bad, but you'll just have to take it on notice that you'll be drinking something that's a bit drying, herbaceous and medium bodied. It won't be for everyone, but there are enough people (everyday drinkers like you and me) that seem to think it's not bad.
Would I buy it based on the 4/5 expert reviews above and the collective 3.5 score? Nope. I would rather drink something that is more likely to get me excited and pay a bit more. But each to their own, I guess ...!