cs_ is dying out anyway... I can't really understand why, though. I like both map types, but nowadays cs_ maps are hard to find.
Seems like people who think like you are the majority.
Concerning that WP pack, I don't know if there are so many good maps left... if you don't mind, why don't you just post a list of good quality maps here? I know quite a lot of custom maps, but there are hardly any new ones coming out any more, and I don't wanna dig through gigabytes of map archives to find some good older maps I don't know yet. Moreover, many maps which I had on my mental "tracking list" never made it to a final version, they just died as promising betas. :-/