Yes, avoid all of them.
I just completed an almost six-figure remodel and the only problems I had were with electritions. The first guys had quality and price issues. I just wrapped up a dispute with the last one, and while there were no quality issues, this company tried to charge me 150% actual time and a 100% markup over Home Depot prices on materials.
You can use Angie's List, which will at least hopefully help with the quality issues.