Upon research I narrowed down to these two items:
- Prolimatech PK-3 Nano Thermal Paste (comes with spatula) - Amazon
- ArctiClean Thermal Paste Cleaner - Amazon
- .6in Heatsinks - AliExpress (My first purchase from AliExpress)
- Came with extra Raspberry Pi heatsink sets
Wait, err, make that three items - the cleaner was one of those things on Amazon "people also bought." The stuff works great but I ended up only using it on the first one so I could conserve paste.