Try advanced vape supplies, if you're into stainless steel coils, you can get pre wrapped/build coils as well as spools and as right now they having a 30% off with code spring I believe or 20% off due to their shipping changes, with code AVS. I should be hired by them since I sound like a broken info commercial today
Most of the fused Clapton of any kind are great for testing flavors, as well as if you get a spool and would wrap yourself, small enough to get into smaller decks (22/24mm) the quad and triple core unless you get only 5 wraps and even then might be too big, would go in mostly all 25mm and up. Lower/smaller and you'll have to squeeze. Still possible tho.