I'm about to build my own system based on Core i7 too and I've already decided I'll go for Gigabyte's GA-EX58-UD3R as the two Asus boards mentioned previously simply are 60 to 70 euros (or even more dollars) more expensive.
The P6TD Deluxe holds some advantages over Gigabyte's offering, such as dual LAN, max of 24 GB RAM (as opposed to 16 on the Gigabyte). Also, their allocation of PCI slots is different, with the Asus having 3x PCI-E 16x where the Gigabyte has two.
Finally, it appears the P6TD Deluxe is better and easier to overclock than the GA-EX58-UD3R.
Since I will install 6 GB of RAM, only need one LAN port, one PCI-E 16x slot and will not overclock my system, choosing the Gigabyte GA-EX58-UD3R saves me 60 to 70 euros without sacrificing performance.