A lot of ODESZA's music seems to be sampled drums still. Just a more life like depth to them. Is there a specific song of theirs you could link so I could hear the drums you have in mind?

I think for things such as claps, it's a layering of them. One clap with a stereo enhancer/stereo delay. To give it big width. A few real sounding clap samples layered with the other clap, panned left and right (May have to mono them first). EQ the low end, to the low mids of some claps. Together the clap layer will be wide and more lifelike.

For Kicks. Use a basic kick that gives you the punch you need. EQ the top end and high mids off. Layer with a real kick drum, or kick drum with depth and more 'flavour'. EQ like anything under 100hz on the realistic kick, maybe higher or lower with a different slope depending on the overall sound. Make sure the basic kick is mono. Then use stereo delay/stereo enhancer on the second more real kick. Layered, this should give you a Kick sound with a big, wide, live sound.

Same principle for other instruments.

Sometimes a lot of this isn't even needed. Add the drums to a bus, then EQ the low end off (or whatever, just experiment to your mixing needs). And then to the drum bus, add a reverb unit and create a small room type reverb. Small room size with short reverb time (release). Get rid of all the dry and have wet 100%. Then put that bus low in the mix. It'll give dry samples that aren't lifelike, a bit of life. A bit of depth and room.

As for sample packs, hip hop ones will usually help as they have clean kicks to more grand kicks. Cardiak, !llmind and such may help. A country type kit, or even jazz to just a simple real acoustic drum kit to layer it will help you with a few ideas.

Hope that gives you a few ideas.