Overclocked Core i7, 3-way SLI, 6 hard drives, quite a bit of fans, and whatever else comes out from now until 2013. That's how far I see the Revolution85+ lasting.
I've had the Galaxy since 2006 and while it's still perfectly up to the task (it even has dual 8 pin CPU), it's starting to lack on the PCI-e side. Only 2x 8pin and 4x 6pin.
By rule I don't use any molex adapters, as those put strain on other rails. Hence a new PSU is needed. 8x 8/6pin plugs should last a looooong while.