I just installed a Corsair 450 watt and I'm getting a 650 (hopefully not too small) for my rig.
They come with some zip ties, the cables are all wrapped in a mesh material for better airflow,
you've got every cable type imaginable, the PSU looks nice and doesn't even get hot to the touch.
The drive power plugs also come with tabs, which make inserting and taking out the plugs a LOT easier
than PSUs of old. That should be standard on every power supply.
One odd thing is that it exhausts into the case, not out the back. What I finally figured out, was that
the design is so that it sucks cool air in through the PSU then runs it over the other equip, so assuming
you have a sensible cooling system, all the heat is thrown out of the case. You're not sucking hot air through
the PSU, then out the back creating a heat trap at the top of the case. The larger fan, being on the bottom, also helps lower the noise.
I heard the system CPU fan on the system I was fixing, not the PSU.
If I get the parts tomorrow, and if I don't have to play host to some folks, I'll have it built by Friday night.
So I can have a response on the cooler by then.