These 4Gb sticks seams to be really good for 24/7 use. What's your impression?

I've been looking into G.SKILL Trident (3x4GB) 1600MHz 7-8-7-24-2N 1.65V (F3-12800CL7T-12GBTDD), but couldn't find any review.
These are not exactly the same, but I guess G.SKILL is doing good with these new 4GB sticks. Maybe I should hit on that 12GB kit.