HP 48G+ over 50G?

[Eddie W. Shore]

If you go for the 48G series and want additional storage, consider the 48GX. However, the ROM cards can be super-expensive.

Although the organization of the keyboard of the 48GX is better, the 50G IMO has two big advantages over the 48GX: it is faster and data can be stored on a SD card.

Probably the 50G would be the better bet overall.