hihi
studio perfect spf15pa++ is a powder foundation===>powder foundation very different feel as compared to studio fix, and doesn't cause break outs due to the different formulation coverage wise, medium SGD14 for case, SGD54 for refill
Lightful protective spf20pa+===> 2-way foundation which u can use wet or dry, also much smoother then studio fix, again a different formulation all together coverage wise, sheer-medium retails SGD14 for case SGD60 for refill
Both compared with moistureblend they are very different, i'd say moistureblend is comparable to studio tech but better, however the two above are powder forms,so it does differ quite abit
www.xe.com for conversions
note: the prices are very high as compared to studio fix, as it's both made in japan
HTH!