I bought a few Stealth rotaries in an Ebay auction about a year ago. They were my introduction to rotary tattoo machine use. I still use them on occasion for smaller things. The motors don't seem very strong, so I generally don't use them with larger configurations. What I like about them, is that they are very light (using them with disposables is so easy) and they come with several options to adjust the stroke length.

There is a black bearing (short stroke - as in IMPOSSIBLY SHORT), a gold bearing (the middle ground - the one I like), and a silver bearing (very long stroke - so long, the machine feels a little jumpy in my hand).

I tried all three to see what worked best for me. As long as I move slowly, I can line with the gold bearing just fine. Sometimes, I use it for lettering pieces - especially if the lettering is skinny and delicate, I will line and fill it in as i go along. Sometimes, it makes the job go by so quickly, that I have to charge by the piece instead of by time.