It has been a while since I have been here wow the new look is cool!
I have a Sony MDMX-4II
Great little 4 track expecially for begginers. You should be able to find a used one for cheap since the on slaught of the 8+ track mini disk recorders. Ebay probably has tons.
The MDM is super easy to use. The track ping pong features are really easy. The only gripe I have is there is no phantom power so if you want to use a real good mic like a Nueman or something along those lines you need a power amp with phantom power.
Let me know if you have any specific questions. Oh yeah if you do go with it be sure and get the MDMX-4II not the MDMX-4 the II is revamped and runs smoother and has a couple added features.
jontflesh