What is the best GPU card to mine scrypt algo?

[buddynuno]

Hello everyone,

I have looked at https://litecoin.info/Mining_hardware_comparison

But am looking for the opinion from the miner's experience to know what is the best GPU card to mine scrypt algorithm based coins considering the following:

-Best series: 5*** 6*** 7*** R9 2**
-KH/s
-Stability
-Wattage when OC
-Performance if Crossfire
-Performance on mining rigs
-Price
-Other important info you might want to add

Thank you all for the help

[Amph]

280x toxic imho(great heat dissipation), but flash the bios to lower the voltage, it is very high on default

[brooklynite]

280x toxic imho(great heat dissipation), but flash the bios to lower the voltage, it is very high on default

does that effect the warranty? its important because my Sapphire 7970 died during the first week. ran at 67F avg temp but always nagged and dropped kh so it did have an issue.

[bykardinal]

i have  2x  r9 270x = 2x450kh \2x200watt\2x 200$

i dont like top graphic adapters cose rigs with 3+ r9 290x need vry cool power suply, its not cheap

[buddynuno]

What about the 5970 card? I have read that they can push to 750 kh/s???
That is the same that the latest cards like 7970, R9 280, and R9 290 are hashing!!!
Any comments on this?