Since it gets confusing knowing what each PS3 has I've made this little table for anyone who needs help or could use a refresher on whats got what.

Model	BC w/ PS2	Flash Reader	Wireless	USB ports	Discontinued
20gb	yes	no	no	4	yes
60gb	yes	yes	yes	4	yes
80gb (first)	yes	yes	yes	4	yes
40gb	no	no	yes	2	yes
80gb (second)	no	no	yes	2	yes
160gb	no	no	yes	2	yes
120gb (slim)	no	no	yes	2	yes
250gb (slim)	no	no	yes	2	yes
160gb (slim)	no	no	yes	2	no
320gb (slim)	no	no	yes	2	no