Yup, most new kits are based on Samsung IC and actually most are similar. Probably all new G.Skills are on Samsung now as this IC is the cheapest and let to set higher clocks at lower voltage.
Personally I don't like Geil as their memory often barely run as specified but if you know how to set them then you can make good results. Quality of the modules is good , it's just that they never make good memory profiles.
Problem with most Samsungs is that they won't run at tight timings. These 3400 Geils have CL16 but I don't think you will make them run much tighter. For comparison your Kingston kit is Hynix based and will probably make something like 3200 CL13-14 at higher voltages and depends from luck maybe 3400 CL15 or something near.
For me best IC for 3000 or below is Micron as you can make them run at ~2666 10-10-10 or ~3000 12-12-12 ~1.4-1.5V where even best Hynix requires 1.65V+ for something like 3000 10/11-13-14.
On this one I had 1st spot in hwbot competition - Crucial Elite kit which is specified at 2666 16-17-17 but I made it run @2750 10-10-11 1.45V.
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One more Micron 3000 12-12-12 1.45V
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Samsung will probably start to shine when you set them at 3500+ and tight sub timings but I had no chance to check it.
I also see that Ripjaws4 3200 CL16 ( the one with fans ) is about $50 cheaper than Geil. There was also Mushkin 3200 15-15-15 in about the same price but they are out of stock for like 3 weeks now.