I believe the main issue with smd could possibly be in the quality of machine-soldering? Repairing an smd populated board is also tricky without the skills, tools and experience needed.

Me? I've been a pauper-coward and ordered a ladder type Dale attenuator to see what that does. Constant impedance on every step, the resistors have a good rep for basic types I think and if it's load of rubbish, I can say I've tried!