Project hardware question

[Drasko DRASKOVIC]

Hi,
I have been looking for sometime at OsmocomBB project, but haven't tied it yet.

I have seen that software supports a number of Compal phones :

Supported Phone hardware

Information specific to certain Calypso based phones that we support

Designed + Manufactured by Compal, OEM by Motorola
MotorolaC115/C117 (E87)
MotorolaC123/C121/C118 (E88) -- our primary target
MotorolaC140/C139 (E86)
MotorolaC155 (E99) -- our secondary target
MotorolaV171 (E68/E69)
SonyEricssonJ100i

So, I was wondering:
1) Which would be best to have to start with, as the most supported target ?
2) Where I can get this phone quickly and easily ?
3) What additional equipment is needed (how do you flash the software
and how do you debug) ?
4) Is there some software simulator in which I could see what is
happening and how the SW works without actual HW equipment ?

Best regards,
Drasko