Spc or smc lipos

Hello my rc-friends:)
Don´t know if the spc 8000mah 20c, the smc 8000mah 28c or the smc 9000mah 28c will be best for my e-revo, there is a difference in price to. Or if there is any other you can recommend.
I have zippys now and they work but want something better, turnigy I have had and they where dead when I got them so something else.
Any input as to which is more punch, bang for buck, run cooler more speed is much appreciated.
Thanks so much boys and girls