thank you everyone, just an update:
i ended up getting the:
T6000.2S.25HC/19169 Turnigy 6000mAh 2S2P 7.4v 25C hardcase pack
and it only cost me $35 with shipping (which equates to ~22 British pounds)
i'd say that's a solid price with delivery! especially from a reputable company, for a pretty nice capacity and discharge (for my application)
anyhow, thanks again, for all your solid advice!
Duster