Terminator (C) threading is pretty much spot on to the original. It leaks if you build it wrong, but so does the Odysseus. It's a very well machined clone IMO.
I like the Phoenix as well... It's very simple, but pretty much for dripping only...
I also like the AGA-T+ / T2 Genesis style... Not a clone per se, but in the genesis style. It's built well, and fairly inexpensive. SS wicks take some fiddling but once you get them down, it works very well. The AGA-T+, like the original, is able to have the air hole positioned anywhere you want it.