I have owned two blue M94s in the past with 4" barrels and currently own a stainless steel M94 with a 5" tube. I never have had any problems with any of the three and they've all worked extremely well for me. The only gripe I hear from other M94 owners is the heavy DA pull, which is present in most specimens. The upside to it is that it smooths out it lessens with use. It doesn't bother me since 99% of the time, I cock the hammer and shoot it SA anyhow.
I don't have any experience with the Tracker .22, though I do have one in .357. Maybe an owner can weigh in with their experience.