All dripping RBAs work about the same, the main difference being either drawing air from an unsealed connection like the A7 and Eternity or from a side hole like the Phoenix, IGO, Fatty, and many others. And then the Smoktech
rda which brings the air from a side hole but reroutes it from below the coil. Either way it results in air being drawn over your coil so the flavor is pretty much the same for all drippers. What you pay for is quality, ease of use, draw preference, and size preference; the flavor is all in how you build your coil.
So that comes down to wire gauge and material, wick size and material, and how you put them together. I've used Kanthal and Nichrome and can't taste a difference between them, but the Kanthal seems to be more durable to me and has more resistance per inch. I would stick with 32ga Kanthal on your Twist. Thicker gauge like 28ga produces better flavor but needs more watts to heat up, drawing more amps than what's safe for a Twist. Wick material is about personal preference when it comes to cotton, silica, stainless steel mesh, hemp etc. Many people swear by SS mesh as producting the best flavor. I like silica, but so far only the German double twisted stuff since it has the best flavor for me and is more durable.
And finally when building your coil, how you build it has different results. Whether your wraps are touching or spaced, how wide you make your wicks, how tight you do the wraps, and so on. Just be sure on your Twist to keep the ohm above 1.5 and that it has no shorts. SS mesh, while loved for it's flavor, can be hard to set-up without running into shorts and could be dangerous to use on your Twist.
My favorite
rba so far is the IGO-S. It's tiny and looks great on a Twist, though I use it on my VAMO. I like it's small size and how easy it is to set-up and get the air-hole close to the coil for best results.
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