I have tried diamond coils... Its ok. I'm sure it could have been executed better on my part, but I keep returning to tricro coils. I have been doing 18 gauge for the nano's on top, and the micro in the middle at 1/16" id. Its pretty legit when the id's are so much closer than the original idea. I use 28 gauge and usually get close to 1.6 ohms. I really like it. Even slapped one on my RSST for giggles.