Yeah, those succulent summer sales on Steam should be coming around the corner about now.
BTW, don't play any of the games (if you ever get one) without mods. Seriously.
-ETW is bugged to hell, and really lacks interesting features that mods give it (but I only like it above NTW by the feel the game gives, NTW feels way to futuristic.
-NTW and TW:S2 have ridiculously high death rates... it's stressing to play them. They become so much more enjoyable with stats rebalancing mods.
I actually haven't touched TW:S2 since months... still looking for an excuse to install those mods and give it another go (and RTW keeps me coming back!)