I'm looking to buy a multi-tuner STB and I havent a clue what the different tuner options refer to and which I should select.

Firstly there is DVB-S/S2 and DVB s/2 and Single Tuner options. (I guess DVB S/S2 is a combination of DVB S/2 and a Single Tuner).

DVB-C/T and DVB-C/T/T2 a nd Hybrid DVB-C/T/T2. What on earth are these ones about?