I should say that it depends on what your interests are. Also on what your reasons were for taking up the IAHBE subscription in the first place.
If you need Tcredits for games and other activities, then the 105 Tcredits pack is a cheap option.
You can channel your money to buying and distributing Gift Cards.
By applying some of the knowledge gathered in IAHBE, you may also consider some PSAs -to- -go.
