Looks like the Paasche VJR with head & needle assembly #2 has taken over most duties. Its color cup is the best design for quick cleanup. It is quicker to clean out and flush than the Iwata Eclipse or the Omni 5000.
Once I saw the little pinhole in the bottom of the VJR's cup, I finally bought all 3 sizes of Microbrushes. Those things are extremely useful for a whole bunch of stuff! No more Q-tips (almost).
I have also used the VJR with its #1 assembly with the paints extremely thin to do tedious touch-up stuff. With the #1 and very thin paint, I can actually get thinner lines than I used to get with the Iwata Eclipse hp-bs. I did better flames (on paper) with the VJR #1 than I did with the Omni.
The Omni's one and only head assembly does beat the VJR's #2 for fine lines though.
I have no regrets about buying the Omni 5000 though. That airbrush's cup is bigger than the Eclipse hp-bs, yet still small enough for me to like it. I actually like the pool in the bottom of the cup (the nail art airbrush's fluid cavity) even though it's not as easy to clean out as other designs. It holds more paint down inside the body rather than having to have a bigger cup on top of the body. So, the Omni 5000 is what I use to do a 1/24 car body or other multi-part / one-color paint sessions.
The lines I am capable of with the Omni are almost as thin and tight as they were with the Iwata Eclipse.
Now that I've had all these particular airbrushes in use, I think the price on the Iwata hp-bs being $40 more than an Omni is justified. It's not that the Eclipse does a better job. It just has a better feel. It has a smoother trigger without oiling the needle. The spring action is perfect on the Eclipse... nice & useful even when tightened all the way in. The name & model stamp on the Eclipse is perfect while the Omni 5000 stamp is quite messy.
The Iwata Eclipse always made me feel like it needs to remain perfectly clean at all times though. I hated using a wrench to get the head assembly off that perfectly chromed up nozzle cap, but I did, and it never did gash up the chrome. But, the Omni comes with a wrench for this purpose. It feels aok to just torque the head off of that airbrush. There is no feeling like I need to polish the Omni inside & out after every use either.
Iwata Eclipse users shouldn't feel like they got ripped off, because there are $40 worth of extras in that airbrush. But Omni users did get a great tool for a great price that performs only minutely different than an Eclipse, and that's only in the area of fine lines and trigger smoothness.
Now, my Eclipse hp-bs is sold. I would kinda miss it at this point, but I'm lovin' the Paasche VJR for the jobs I originally bought the Eclipse for. I got the Paasche VJR (used) for $23 + $6 shipping heheheh. I got the Omni 5000 for $66 brand new.