How do you find trustworthy, affordable, licensed contractors?

[Ken Sypal]

Hi, after about 20 nearly trouble-free flips, I've finally run into a mess of problems with contractors and am finding myself in need of some new ones.  I would like to have at least 3 reliable ones I turn to.  They must be licensed (or have licensed friends/partners that they can work under), do decent work, and be reasonably priced.  If you've had success at consistently finding good contractors that fit this description, I would love to hear how you've found them.  Thanks in advance!  Ken