If you are planning to use atomizers larger than 14mm in diameter, then your gonna need the low profile Reo grand.
Even if you aren't gonna use large atomizers the LP grand is an excellent choice because it gives you more options for atomizers. It will fit any atomizer as long as the atomizer has the standard 510 connection.
The mutation x you could use, however you would have to get it bottom fed. You could experiment with it and try to modify it for bottom feeding yourself or there's a forum supplier on ECF that can possibly modify it for you for a small fee. The thread goes by catfish atty mods, PM chowderhead1972 (Tom) as he is the one who mods all the non bottom fed atomizers to work with the grands.
All the reo grands on Reo's mods website are setup for sub ohming. Most people don't recommend using reo's with
coils that low. But I have personally vaped .14 ohm coils using my vtc5 batteries and haven't had any issues. You will need to apply deoxit gold or noalox to your contacts about once a week if you plan to sub ohm that low just for safe measure. Good luck man, and for the record I found that I get much better flavor and nice clouds on coils around .5 ohms and really don't have any reason to drop below the .5 range anymore.
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