For Clearomizers, I've tried the CE2's, CE3's, and G4's. So far, the Fluxomizers have been hands down the best. CE3s are good for thicker juice, but they're a bit fiddly. I think I'm going to stick with Fluxomizer XL's in the 2.8-3.0ohm range. I have yet to have one leak out the top or bottom and the wicking has been better than any other top coil clearo I've tried.
For Regular filled cartos, the 3ohm Boges are the tried and true standards. I keep 'em around for emergencies.
For tanks, don't even think about anything dual coil. Personally, I don't even waste time with any tanks that take filled cartos anymore. The Vision Stone 3's have been working great. I haven't tried one yet, but the new Vivi Nova should be even better with their improved wicking, metal tank option and replaceable coil assemblie designed with input from Issac at Ikenvape (of I06 atty fame). The VS3's innards are replaceable for $3 and last at least 2 or 3X longer than any filled carto.
I also picked up a I06 and a "Cannon" Dripping atty in 3.5ohms. Both of them work great, but I'll probably pick up a HH357 as well.
Fluxos, VS3s and a couple dripping atty's. All in 2.8-3.5ohms. That about covers everything.