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