ASUS don't just seem to be just slapping the TOP naming scheme onto any card with some form of overclock, they really seem to be using the name only when they have found a really TOP overclock.
What will be interesting is the price; the TOP should come in between $50 - $100AUD cheaper than the 8800GTS, but about $70 AUD more than a stock clocked 8800GT. Only you are able to decide if you're willing to pay the extra for it over a stock clocked model.
So far all the cards we have seen have had no drama hitting 700MHz core. Now, you could say that in this case the ASUS doesn't really offer very good value with this card, but if you don't want to overclock manually or if you want a 3 year warranty over the usual 2 year one, or simply like the game bundled with this card as opposed to others, the value is quickly seen.
The TOP 8800GT from ASUS is going to be a popular product for a few reasons; firstly, it's able to outperform the newer and more expensive 8800GTS 512MB when it's clocked at its stock overclocked speed. Secondly, the bundle is good, even better than what we have in the ASUS 8800GTS 512MB bundle which doesn't come with any game at all. Finally, the card is just kick ass. It performs extremely well and doesn't break the bank.