i think an advantage the hr-03 gt has is the fact it can be installed with the heatsink on top of the card (sandwiching the board itself), while most after-market coolers occupy an extra slot below the pcie card. for someone with no free pci slots, this is an important difference and why i like the 8800gt to begin with as it's a stock single slot card (as opposed to the 3870). also, the new hr-03gt has 6 heatpipes instead of only 4 found on the older hr-03, which i assume is what is used in that german review posted above, so that's another factor to keep in mind.
still, as $50+ (not including a fan even) is a lot of money to be paying for a vga cooler on top of a $250 vid card, i think i may settle for using rivatuner to bump the fan speed on my msi card if it ever arrives from dell. do you think bumping the fan, as many have been doing, should provide sufficient cooling?