The stillare v2 by infinite is AMAZING! I got one a couple of weeks ago, and honestly haven't used much else since. This is by far the most true and pure atomizer clone I have ever seen. It's beautiful... Weighty, well machined, and comes with spare parts (even 3 gold plated screws!) and a drip tip, which is also top notch. IMO, it's a no-brainer for the 20-25$ you are going to pay to have it in your hands on Tuesday.
I have a few other originals, and clones of those originals. The EHpro atomic is pretty well done, but really I don't feel that it is anything special. You are going to pay more for less, and honestly, I don't think it will blow you away. Both the clone and the original have a few issues that cause me to point others to different avenues.
The igo-w is fine. I like it; I have one. I rarely use it. Adjustable airflow is a big deal for me, and I like the flavor I get out of my other drippers better. I definitely love the price, availability, and simplicity of the igo-w. The thing I love most is the clear cap that came with mine (15$ shipped, prebuilt). However, I don't know that you will experience much difference between the enigma that you currently use and the igos, and they don't quite do it for me, either.
The TOBH "replica" that I have is pretty darn impressive as well. The machining is definitely decent, but it has some rough parts and chunky-ness. I had to do a couple of deep cleanings before I was comfortable using it, and it still doesn't *look* great under the cap. It performs amazingly well though. I haven't got a chance to try the infinite clone yet, but I have heard that it is the "one true clone". They are pretty hard to find right now, as are originals. If you happen to find an original for less than 100$, grab it up. Or wait a month and get one for 75-80$. I have no idea how anyone would be truly (or even partially) disappointed by the TOBH, especially given the price and origin.
Sorry for ranting...

hopefully you find some value in there somewhere. Have fun!