1. Would you keep a Creative H5 T.E. analog headset
They look like yet another reprand of the good-ol Takstar. Not bad by any means, but they can easily be outmatched. Now here's the catch: in the 75$ range, for both mic and headphone it's gonna be tight, so tight that I'd say keep the SoundBlasters while you can save up for something better. If you really want to switch, here's what I would say:
For the Mic: Samson GoMic - 40$
Headphones: Panasonic HTF-600 - 35$ /...