I've got the exact same setup really same (ish) motors, NIMH batts and sabretooth as well. Always good to see how they work together and the possibility's of what to do with them. Plus, i think we have very similar skills.
One word of warning. I've just found out that Manchester will be seeing the debut of Extreme Robots' new upgraded steel arena, which means only one thing.... there will be spinners.
sounds exciting yet painful....