If you buy second hand gear that has been used by a pro then it will have been used very hard indeed,much harder than the normal amateur would use it,and would be sold when it starts to give the pro problems, so if you buy ex pro gear be prepared to have it serviced, the same goes for m.f.pro gear,Take it from one who knows, I would hang on to my gear as long as it worked, if it was looking like needing major work it would be part exchanged for new gear, I am a pro myself, Richard