Anavar is the most user friendly oral that I've ever run.... i'd stick with it if I were you.
Otherwise, ease into orals. Try dbol - start low, say 10mg a day, slowly build up dosage... see how it plays out. Same with winstrol. Orals become easier to handle over time. If you feel toxed out (nauseous) - stop, take a break, and try again at a lower dose... or move on to another. Steady as she goes.
Superdrol is garbage that should not be consumed.