Bought My First Looper - Here's the problem

[x031661-loopers@yahoo.com]

I've been reading about loopers for the last few days and it seems like, 
as with anything new, you don't really know what you want from reading 
about it.  I had to buy one, now I have a better idea what I want and I'm 
wondering if someone can tell me if I can actually get this from what I 
have, or what I should have bought.

I have a digitech JamMan.

I find it pretty easy to create loops with my guitar.  I like the Auto 
Record.  I find it easier not to use a pre-set tempo.  I like that I can 
overdub on a loop.  I like Undo.  I like that there's 99 loops possible.  
I like that I can increase the memory.  I like that, during playback, you 
can change loops and it waits until the end of the current loop to switch.

A lot of these features might be normal for any looper - I don't know.

It seems to have a big deficiency for live use though in that I can't save 
a loop while the loop is playing.

What I want to be able to do is to record a loop, say a verse.  Let it 
loop as long as I need.  When the chorus comes I want to step to the next 
loop, which would be empty and record the chorus, let it loop as needed 
and then switch back to the verse and let it start looping the verse 
again.  Maybe I'd add an overdub or something, then switch to the chorus - 
come back to the verse etc.

The problem is, if I record the verse loop and then switch to the next 
loop number I lose the verse - because I didn't save it.  If I want to 
save it I must first stop it from playing, which is not appropriate live.

Is that a problem with most loopers?  I was also considering the Boss 
RC-20  or, if I must spend that much an RC-50.  

Or maybe there's someway to get the JamMan to do what I want?

Any ideas or suggestions?

Dave