i have found a weight gainer by a company called phd called pharma gain. I liked the sound of this one because it has 26.5g of protein and 26.5g of carbs per 2 scoops serving its got some fat in as well most of this is made up of EFA's but also the carbs are made up of low gi ones and not just cheap sugars. also it has around 350 calories per serving and the chocolate cookie flavour tastes like drinking broken up cookies! :-) also with this one i have found that its quite good on price i get it for 26 pounds for 2.25kgs. check it out at http://www.phd-supplements.com/pharmagain.shtml
but if your going to buy it shop around to get it cheaper. hope this helps.