I think there's been lots of R&D on jet drives. It's been done year after year at the drag races by the pump builders and drivers. Not by the manufacturers.
If you want a strong pump, have one of the pro's build one. I don't think it matters all that much which brand pump you start with.
As to the twin smaller pumps vs. one larger pump. Who knows? It'll be interesting to see what happens. I'm a bit skeptical though. Let's see some posted results, not just a shitload of marketing hype.
Eric
[This message has been edited by Eric (edited February 12, 2002).]