Not sure of the PDA rcording, there ma be more info in the Computer Recording forum...
As for the Creative Jukebox 3 and/or Nomad, it is the same machine. The proper name is the Creative Labs Nomad Jukebox 3. I use a JB3 - wonderful machine. It has a 1/8" analog/optical combo line-in (like ost MD recorders), and has USB1 and 2 as well as firewire as output to your computer (digital) or 2 analog outs.
Most people use the Edoril UA5 in front of it, but there are lots of combinations possible, especially with the opt. mod V3, the AD20 and many others having optical out. Also, the JB3 itself has a AD (via 1/8" analog input), though it seems to have some problems with harddrive noise... Some folks don't mind it, others avoid analog input... I recommend an AD.
As for price, it is a bargain at $150 (ebay - only place to get them now). You'll want to get a second battery (if you can find one) to get up to 5 hours recording time.
Are there better products out there? Certainly! The Fostex FR-2 is similar in thinking, but will run you about $1500??? Marantz makes a HD recorder now, but even that one is $600+.
Get the JB3, or fix up the DAT. Don't upgrade beyond that until a real pro HD recorder comes onto the market at a reasonable price...
Terry