Like all professionals you use, check out and use the ones you have confidence in - after you have assessed fully.
There was an analyst with one of the big broking firms in Auckland some of us used to follow very closely - very very closely.
Whenever he recommended 'Buy', we sold or stayed clear.
Whenever he recommended "Sell', we bought with or ears pinned back.
True story and it was such a sad day for us in the industry when he moved to the UK.