I have one of these plants in the eighth week of flower right now, together with two White Widows. All of my plants put out a ton of branches and they have many, many budsites. The buds on my WW are huge and rock hard. The buds on the NL x BB are OK, but they still haven't filled in the way I would like. Granted, they still have a week, week-and-a-half to go, so we'll see. They are very frosty and I did a test smoke that had very good results. At eight weeks, the NL x BB is about 50/50 cloudy/clear trichomes with just a stray one or two turning amber. That tells me they have a way to go so the buds may tighten up. I will say that most of the hairs on the buds turned brown but now they are re-exploding with new growth of white hairs. More of the calyxes are swelling up again and some of them are again as large as LeSeur peas.
I am using a bubbler system, by the way. If you want to see some pics of my NL x BB at a little over 7 weeks, there is a thread in the Indoor Growing section entitled something like, "About 7 weeks in flower -- How do they look?" This also shows views of the WW which has some buds that are more than 16" long, as wide as a Coke can, and as tight as a rock.
Don't get me wrong -- while I'd like the buds to develop a bit more and tighten up, and I think they will -- I won't be disappointed if they don't. There is a lot of bud there and it is good smoke. If the buds end up small and a bit airy, I am still going to end up with a ton of smoke off of that plant. And, since it is all for me, I don't give a darn about stuff like bag appeal. I know it tastes nice, even with a quick cure, and the high is nice and mellow and flowing. It is a social high and I can quite easily imagine going to a party and still being able to talk after smoking it. The high with the WW, on the other hand, is much more intense and I don't know quite how I'd manage in a social situation, unless everyone else was smoking it. Then we'd all be on the same wavelength, so to speak. Granted, I realize this isn't really a smoke report yet because very few of the trichomes are amber and nothing will get a proper cure until the plants come down.