i bought some of the maximuscle cyclone couple of weeks ago and have found it pretty good. its difficult to judge exactly what effect it has had in terms of muscle growth, because im not sure what gains i would have made without it over the same period. i would say it certainly aids recovery though.
as for the taste, its not that bad. i have tried vanilla and chocolate and i preferred the chocolate, the vanilla was too sweet.
its also quite expensive if you use the recommended dose, a 1.2kg tub lasts about 10 days (daily serving of 2x60g). they have a 3 for £100ish offer i think... but still £100 a month is a bit much...
you can buy the creatine on its own though and i think thats cheaper if thats all you want. cyclone has lots of protein and some carbohydrate in too.