I presume you mean PB19 '10.
Never tried the Block 6 09 so can't really comment. BC gave the PB19 '10 a 93 and the PB6 '09 a 90 so he disagrees. He's been wrong before though and there will be a subjective margin.
I am keen to try more of the PB3 (43 Degrees) as I really enjoyed the single '08 bottle I had. Bob gave the '09 of this a 92 against 86 for the '08.
More MSB chat;
I had a bottle of the Co-op Estate Reserve over the weekend. It'd had it. I did buy a few bottles more recently that may not have been stored too well so hopefully the ones kept in the cooler are still ok. However they are mixed up so it'll be pot luck whenever I open one.
Also, I may have made a bit of a boob on the Goldwater

. I revisited after it had been open a couple of days and found a completely different wine. The nose was similar to the PB19, really wonderful. It's bone dry and although the flavours are more subdued than other notables, the pithy grapefruit had subsided and delicious passion fruit was evident. A little pith remained, but not much more than in the PB19. Light, delicate and elegant it's well worth a try, even though it is a £1 more expensive now.
Finally, I notice we are still waiting for a TN for the Morton Estate from GK
