Definately going to get the Noctuas. I have the fans turned down low, and system is still at 30C. And now I hear the Corsair fans rattling. I've never had a Noctua that rattles, so I'll be off the local shop agin in a few mins.
I can connect them to the Lamptron. That has it's own power from the PSU. The fans have a 3 pin connector, and I'd prefer not to be adding redundant molex connectors when I don't need to. The fewer cables the better is my motto.
Prior to upgrading case and cooler my system was at 34C and when encoding media it jumped to 63C. I haven't done any encoding since upgrading, I'll get to that in the next day or two and will revert with temps.
Interestingly, this upgrade was not orginally about cooling. It was that my Antec 900-2 case had too many design flaws that irritated me, most notably the drive cages.
As always I am grateful for all the support and assistance. It is wonderful to be able to come here and get such good advice and feedback. Thank you.