RE: GWS Tiger Moth
Get the GWS flight pack for the SS, I can't remeber the P/N, but it has the higher amp rated speed control and a bigger batterey. These will also work on the TM. The recommende pack for the TM has the smaller Speed control and won't handle larger motors, and it comes with a dinky 150 mah nicad batterey, so don't get that one.
Both the SS and TM will haul a 720 mah Ni Mh pack no problem, so I recommend that you get one of those for your second batterey. Also go with 7 cell pack, the extra weight is minor but the increased power is good to have.
My SS with an 8 cell (9.6v) 720 NiMh pack flies for over 10 minutes, and has enough power to haul a cheap digital camera up ( see related thread on the board). I also have older heavier servos than the Pico or Naro that GWS offers, so mine is a bit heavier. You won't be sorry with this combo.