Looks like you got some good sticks MacJunky.
My Mushkins are at the same speed, but only 1.9V
My set won't do 1000mhz at 2.3V, and IIRC they wouldn't even boot at 2.4V. But I think they clocked pretty good when at 4-4-4-12.
@Scart: If you're not looking for anything too extreme, then the Platinums should be OK. Just make sure you won't need a 500mhz FSB, cuz not all of them can do it (eg. mine). There may be cheaper options from other companies (ie. Corsair, G.Skill, Mushkin, Patriot, etc...) as well if you're not shooting for anything extreme. I had a 2GB Corsair 5400C4 kit that clocked very well before I switched to my current Mushkins. Make sure you read a lot of reviews, and you can check the ICs using the DDR2 IC List (but sometimes it's wrong) and Corsair's forums.