Yeah, well you wont be buying the 64 pro as it's for AMD chipsets, but the freezer pro 7 comes with paste too. It's quieter and will keep it a little cooler- I'd say it was worth the 25 bucks for an overclocker.
If you want SLI, I'd go for the Asus
P5n32-E SLI, or the
evga 680i A1.
The evga is easy to do basic overclocking on, is a good memory overclocker, has an LED debug readout, you hardly ever need to clear CMOS if you tweak too far- it just restarts at defaults, evga has great warranty, a good support community, requent bios updates, and is more affordable than many 680i. There are occacsionally issues with any 680i, but I think evga makes the risk well worth it.
The p5ne32-sli is the older 650i chipset and is quite a bit more affordable, but performs VERY well.
For a single GPU, you might consider the
Gigabyte DS3- this is a great overclocker but can be picky about memory compatibility. The north bridge can get pretty warm on these, but they have solid capacitors which last longer too. Best of all, it's inexpensive.
The
Asus p5B Deluxe is old reliable, a solid board with good overclocking, layout and bios- easy bios flashing too. It can be a little but fiddly though, to get a good overclock out of (so I hear)
If I'm omitting any other good options, hopefully other will interject.