I have worked for Prolifics UK for the last 5 years now. I had a shaky start but the sales and management teams were very supportive and accessible, they helped me to develop as a professional and always praised our achievements. I have recommended two ex colleagues of mine to the company and they are also pleased with their employment.
Cons
Difficult to find cons. I would say probably being away from home when travelling to clients could be a con for people with young family, but some others love that life style.