This thread proves the problem with diesel forums. 99% of the people posting have only tried one product. They might have had good luck with the one product, but they can not speak intelligently about comparisons between products. There is only a few in this thread that can speak intelligently about numerous shops. Not trying to saying all of you don't have a correct opinion, but unless you have tried numerous pumps on the same engine, on the same dyno, your opinion is subjective and relative to your situation and not valid for most comparisons. In other words they don't count. Most people buy a name because they do not know all of the ins and outs of complex things like pumps, injectors or engines in general. There is not one person who can know everything about everything(even though there are two names on CompD that claim that) that is why you have to trust your builder.
All that to say, unless you are an educated consumer, you have a 80% of getting mediocre product, kind of like paying for Mercedes quality and getting Yugo seconds, or like paying for German (bosch) steel and getting Chinese "bosh" slag.
So that you are not buying into Testosterone(yes that hormone can help you choose incorrectly) and hype, here are a few places to start when asking about pumps. If you do not get answers to your liking, buy elsewhere.
What brand P&B's
Billet or regrind cam
what size injectors for flow test
what cc at varying rpm
Less important is how many cc's max. ( I know this is hard to believe, but I have seen people lie, people even use generic flow sheets that do not represent the pump you have paid for)
And might I add, it is not how many cc's the pump can potentially flow but where the cc's are injected relative to TDC and in what size window relative to Crank degrees.
You can send ten pumps to ten different builders, have the same flow at the same rpm (if the stars aligned) and have a 100hp spread across the different pumps. The pump builder and his IQ is the intangible.
I will not buy a pump from a company unless I can talk directly to the pump builder and am convinced he knows what side of a screwdriver to use. That way if you are not happy, you know who to cuss.