The Triton mini is different than the full size triton. The mini is a top fill(Yay!) 2 ml tank that uses Nautilus coils. A real sleeper of a mtl tank all the advantages of a Nautilus coil but with simple and non-leaky top fill (unlike the Nautilus 2 that can get all finicky). And there are Ni triton mini coils for temp control should the urge strike, but to be fair they fit the Nautilus 2 as well. The problem is they're hard to find as they seem to get discontinued since the top fill Nautilus 2 came out, but if you're into mtl and you ever see it grab it.
I like to take a little different approach in choosing mod stuff. First, decide how you will likely vape. MTL being common at first coming from cigarettes. Pick your tank. Now pick your mod, which is just a battery with some electronics in it to supply the proper amount of power. If you go with a tank and coil that runs fine with only 10W, there's no need for a giant 3 or 4 battery mod/paperweight. A single battery will get you through the day. If you're really into future proofing then a 2 battery mod can let you explore higher power direct to lung and lots of cloud stuff. There is no need to overburden your budget at the start. Stuff from Smoant, Voopoo, and Aspire are all good choices for the mod itself.
I can, however, virtually guarantee that once you get used to more flexible vape stuff over your current sticks, your collection of stuff will expand to fill all available space and questions of which is best will fall by the wayside as you compulsively buy new mods and tanks.