Hey man, it took me a few reads to get my head around this post (just took a gargantuan rosin dab!) but let me clarify a little more.
Quartz and ti are as a rule, last gen dabbing surfaces. Both make major sacrifices either in taste or wasting your oil.
The one exception is the D-nail quartz halo, which has a machined surface which spreads the dab evenly across the dish to ensure quicker, fuller evaporation and better tasting hits. Flat coil also means that heat is put onto the dabbing surface at the floor of the dish, not just the sides. Other quartz will be varying levels of not as good. The tasty ones will give pooling of the dab (incomplete vaporization) to varying degrees. The ones that vape fully will not taste very nice. Quartz that needs to be made hotter to compensate for poor heat distribution on the dish will taste bad and defeat the purpose of the quartz in the first place.
I have never used the genesis with quartz but honestly do believe that this is likely among the best of the last generation of nails (I'm talking about the legit one, I dunno about the knock-offs). Still, the main reason why the genesis with quartz insert may not suit some is more likely that the size of the quartz insert may not be big enough to do the sized dabs that you want. If this is not an issue, then this could be considered. I would still choose a cheap domeless ceramic nail over any cheap quartz or ti personally. Flavor and vaporization will be superior.
If you choose to do so, buy the quartz or sic halo from the slim series base page on their site - not the nails page. They are included with slim series bases for a discounted price!
Also I daresay that the 16mm coil was a bad idea, all of the best current nails tend to use 20mm or flat coils IME and AFAIK.
If you decide to choose a halo, please get one of the flat coil heaters that are known to be compatible as described in this thread. Some flat coils are thicker than others.
Oh also the Sapphire halo is not available to public and is much, much more expensive than $50! The $50 sapphire item is the sapphire insert, which is used with either of the quartz or SiC halos (requires one of these and a base).
Sic with a slim series base and sapphire insert would be $170 at current price. Quartz halo with the same would be $190.
Which brand of enail coil are you using bro? I wonder if you have a coil which is thicker than ours? Also, remember for all concerned that according to D-nail's pictures, you are not meant to use the retainer at all with the flat coil.
I can even get my retainer to fit on top of my 220v coil below my halo comfortably when using it on the 45 degree adapter (without the small retaining nut)!
I can very comfortably get my retainer to fit on top of my 120v coil with a halo on top as well! Have done this since before all of you had SiC halos yet on 2 different slim series bases.
From here on in, can anyone asking about this particular topic specify the brand of heater coil they are using? Will help me a lot in helping you
Lol after writing my last comment, it seems like
@MileHighLife identified the problem here! Beat me to it lol