The SRAM PC-59 (or are they calling it the 950) are great -- it's all I've used for a while now, and it worked great in the past on 9 speed cassettes. Plus it comes with a Powerlink connector, so no more "special pins" to screw around with.
Don't use an 8 speed chain on a 9 speed cassette (if that's what you were asking). You can do it the other way around (9 speed chain on an 8 speed cassette) if the situation presents itself.
Don't use an 8 speed chain on a 9 speed cassette (if that's what you were asking). You can do it the other way around (9 speed chain on an 8 speed cassette) if the situation presents itself.