personally using ASUS EAH4670, no problem now although at first it caused BSOD (drivers issue, think happen with all the cards regardless of brand with Vista x64, now solved with Catalyst 8.10)
heard that Gainward is not bad either, and u can consider HIS HD4670 ICEQ Turbo as well (although the fan is said to be more audible)

1. using it with CRT is not an issue coz i am using CRT as well, no problem
2. depends on what u meant "how good", i wouldn't want this card to run Crysis but so far it runs max setting on C&C3, Counter-Strike Source, Age of Empires 3, Generals, and Battlefield Vietnam without problem

it has fan inside the cover, and it occupies 2 slots
ASUS' fan is silent, can't hear any noise at all and it has 3 years warranty
but i am not sure about others, but Gigabyte has 3 years warranty as well. the rest u can do some search for info