What the heck. These are my top 20 until I think of other cards I really like that I forgot:
1. Tactician
2. Black Market
3. Goons
4. Menagerie
5. Conspirator
6. Watchtower
7. Exorcist
8. Peasant
9. Procession
10. Shepherd
11. Merchant Guild
12. Leprechaun
13. City
14. Miser
15. Patrician/Emporium
16. Fortress
17. Poor House
18. Catapult/Rocks
19. Apprentice
20. Ironmonger
It's easier for me to think of cards I really hate. My bottom 10 would be:
20. Ill-Gotten Gains
19. Skulk
18. Margrave
17. Sea Hag
16. Ghost Ship
15. Scrying Pool
14. Militia
13. Advisor
12. Wishing Well
11. Governor
10. Fool
9. Page
8. Smugglers
7. Masquerade
6. Cultist
5. Knights
4. Familiar
3. Possession
2. Urchin
1. Rebuild