Basic help with spec

[starwobble]

Hi Guys,
A very easy one for you PSP experts:
My son wants to buy a PSP with his own hard earned cash for games playing only - he's got an iPod and we've got in-car dvd.
The target price/spec seems to be £150 for a Jap basic model - will he really need the giga pack, and if so is it best bought with the machine or in a couple of months time (as these things only ever get cheaper)?
Does the firmware version really make that much difference in this case?
Many thanks in advance

[shadowprophet]

Is he interested in playing homebrew and emulation or just psp games you would pick up from the store ? if psp games are his only intrest then any psp pack will bejust fine