I also owned the Fujitsu lifebook you have, and just to let you know the full-sized Edge is practically the same dimensions as the Fujitsu (only very slightly larger). I've used the same travel bag that I bought specifically for the Fujitsu tablet PC (just fit in the main section) to carry my edge, which just barely fits. So it's the difference between just fits and just barely fits ... not that much of a difference.

So if you were happy carrying around the P1620, then the larger edge is practically the same size and a little heavier... personally, I would say those are reasonable tradeoffs if you want to read pdfs and write more that short little notes (ie do a lot of handwriting on one journal page), but only you can judge. And, I'm pretty sure I paid well over $3000 for that tablet PC when it was new and very difficult to get in Canada. The edge is a steal by comparison.

If when you say you like to jot things down on the go you mean things like 5 items to pick up at the store, then the pocket edge probably makes more sense. If you want to brainstorm, write poetry or get a good page-sized worth of info visible at once, I'm not sure you'd be happy with the PE. If you were looking for something smaller and more portable than the Fujitsu, the edge will seem a little big and clunky. If you were happy with the Fujitsu, then you may or may not notice the slight extra dimensions/weight of the edge.

Just a comment from someone who is familiar with both machines.