Electronic Notebook

In search of the perfect electronic notepad -- light, long battery life, easy to type and draw with, connected. Why is it so hard? The Sony picture book (wifi via PC-Card only, no built in antenna), or the U3 (only in Japan), the Sharp actius (too big), the Libretto L3 (Japan only again), the Fujitsu lifebook (too heavy), etc. etc. Why is this so hard? The Sony SRX line comes close, but the 7 is not available in the US, maybe the 99?