Sous Vide Cooking

I purchased some days ago a water bath (Bain Marie) on ebay for EUR 103 incl VAT and sending. The trademark of this waterbath is Bartscher. A friend of mine told me it could be a good compromise between an electrical stove and a cooking controler. I am a bit sceptical about the efficiency of this water bath and I would be surprised if it works better than a halogen stove. I’ll try tomorrow and keep you inform!