Well I tried the Badger's out and the results are below.
I did these tests with Model Master Acryl flat black thinned 2:1 with 2 parts paint and 1 part of a 50/50 Isopropyl alcohol / water mixture.
In the pictures I have put the test pieces next to a ruler with 1/16" increments for us Americans, and also layed a metric ruler alongside that in millimeters for those of you who use the metric system.
I didn't test the Omni's again as that wouldn't really be necessary as this is just a comparison and not an indepth test.
Here is what I came up with:
Badger Anthem 155
Badger 150 with Medium tip
Badger 360 (gravity-mode)
The Badger 360 picture above was used in gravity-feed mode since in siphon-feed mode it was about the same as the Anthem 155 in overall performance.
Notice how much paint it put out for the thickest line? Wow! [:0]
It puts out some of the most paint I have ever seen in an airbrush and is probably about equal with my Vega 2000 in terms of putting out a large volume of paint.
I also did a test to see if these siphon-feed airbrushes would be able to spray at low pressures and they did very well.
The top two were sprayed at 10 psi as you can see, and I also put in the one I did with the Badger 360 at 20 psi in siphon-mode as it came out so well.
The paint must have been flowing great as this is the sharpest thin line I was able to do in this small test.
They are all excellent airbrushes in my opinion and I would be happy with any of them. Although this is not meant to be a scientific, thorough evaluation of each of these airbrushes, it does prove the point that we say here often on the forum, and that is that most all of the good quality airbrushes will perform well and spray as fine of a line as needed for modeling.
This was the first time I have ever used a Badger Anthem 155, Badger 360 and Badger 150 and liked them all. I really like the feel of the Anthem and the 360 as they are hefty but balanced very well, and I have to admit that their triggers are as smooth if not moreso than my Omni 4000. I would say my Omni 3000 is about the same though. The chrome plating is done very well and the fit and balance are perfect in my opinion. Now I want one of each as I love these Badger airbrushes.
I hope this helps some of you out there contemplating an airbrush and wondering what they spray like.
Mike