I have just used MTN 94 on a project. Worked great on my test piece of pine. Worked great on my the guitar too, I think. Still waiting for the clear coat to cure.
Art stores sell it. If you have a Blick art supply store up there they have it. You can also get it online, and there website can also tell you where it's sold.
These are low velocity acrylic paints with enough solids in them to do a bit of filling the way some primers do. I just grain filled and painted without primer. First paint I have ever used without ever getting a drip. It has a little tendency to splatter or feel a little rough, which I am guessing is why they tell you to sand between every coat. I did that with 320 and it flattened right out. Dry enough for a new coat after 20 min. Fully cured after 7 days. My brush on acrylic clear coat went over it no problem.
Montana colors (aka MTN) also makes nitro paints marketed as "Montana Black" paints and sold in the same places. I tried it on a test piece and it worked very well, although it's a high-velocity paint and feels very different to use.
I decided to use the acrylic mostly because of its lower toxicity and faster curing time. Both of them go on flatter than Rust-Oleum which I also tested. Although I heard of lots of people I've gotten decent results with that too. I sort of like having the paint coat be flat though which I don't think you can get with Rust-Oleum. I've heard that it's better to have flat paint and let the shine come from the top coat. I don't know if that's true but it seems to have worked out pretty well with my test pieces.
I'm not really a paint expert so please take this FWIW!
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