I've never had any issues with the original type gasket, and I worked on K series engines before the MLS gasket was introduced. There was a lot of development went in to designing the original type gasket and I think it works really well. Having done hundreds of head off jobs on these lumps I know the gasket isn't the problem. All the issues I've had to repair have been caused by cooling system faults, incorrect bleeding,lack of the correct coolant etc. I think the MLS gasket was brought out as a sticking plaster and not because of a need of a cure.My opinion and I suppose many people with far more experience will disagree, but I've been a mechanic for over 20 years and this is my view. I think the K series is an excellent engine, well engineered and powerful as well as light. Better in my opinion than Vauxhall's Ecotec or Ford's Zetec. AND, at the end of the day, if the gasket goes due to a cooling problem, it's a mornings work and 50 quid.