What's so good about this board?
The ECS K7S6A (SiS 745 chipset) is supposed to be a supercharged ECS K7S5A (SiS 735). Personally, I'm looking forward to this board, considering how well the K7S5A performed when it first debuted, as well as the price. Unfortunately ECS might be the only supplier. I'd like to be able to choose between other mainboard manufacturers like Epox or ASUS for a SiS 745 based board.
However, I'm not going to jump on this yet until I see other boards come out. As far as PC2100/2700 goes for 266MHz FSB Athlons boards, I think we've seen the limits of performance. I'll wait and see to make a final judgement.