Best:
Grizzly - Quick delivery even after backorder warnings.
Sears - Not the finest grade of tools but they do provide service and parts
for a long time.
Jet/Powermatic - Released a very poor and inacurate manual on their model 45
jointer. BUT responded to complaint quickly and positively with promises to
update. Also provided good tech support on JET lathe speed control
problem - it worked.

Worst:
Ryobi - They seem to be abandoning their customers to the aftermarket after
relatively short time. Recenly saw my planer blades go from $19 to $70. No
source but aftremarket.