RDA = Rebuildable Dripping Atomizer. These are for either squonk mods, which your Luxe is not, or for dripping e-liquid into as you go. It's a good idea to use a mod w/ Temperature Control when using an RDA, along w/ wire that can be used for that (Stainless Steel, Nickel, or Titanium usually). i'm not familiar w/ your mod but, given when it was sold, it probably can do Temp Control. However, Vaporesso's Temp Control is not one of the best in the view of most folks.
RTA - Rebuildable Tank Atomizer. These can be used on any mod w/ a 510 tank connection. Your Luxe has that. They work like drop-in coil tanks but you rebuild them.
RTDA - Rebuildable Dripping Tank Atomizer. Practically speaking, they're basically RTAs that can be turned into RDAs. They're generally considered easier to build, or at least to wick, than RTAs (tho' that's not been my personal experience). They're usually taller than RTAs.
Your Luxe should be able to take any tank w/ up to a 25mm diameter w/o overhang. There are plenty of options available. i'd lean toward a single-coil, top-airflow RTA, given your mod & your experience level.
You didn't mention whether you vape DL, MTL, or both. Some rebuildable tanks are intended specifically for MTL. Something to keep in mind.
Among the products available, different folks have their favorites. i'm no expert. HellVape's Dead Rabbit Solo checks the boxes of what i suggested; there's an RTA & an RDA. Also, for MTL, Reload Vapor's MTL RTA. Other posters may have different possibilities for you.
Best of luck.