As i havent been on the scenes as long as you guys, i dont know which are good maps and which not
I saw two CS remake maps which are familiar for me and also "chity heat lite" which is one of my favourites from tc1.2
But i have also heard that obj_ruins and obj_villa are quite epic maps. Tried to introduce myself to ruins which is quite good but map scale (not the size! I mean the objects and doorways) are way too small. Terrorist have to crouch to get off the spawn.
I also saw few more interesting such as obj_oswald (maybe different name) obj_invasion and obj_oldschool. Any your favourites