Yup, same here, just got the 50/1.8 abt 7hrs ago. Seems to be quite sharp at F1.8 and very sharp from F2 onwards. Infact, IQ is similar to the more expensive 50/1.4...Worth every penny...
BTW, for those who do not own and bash this lens saying it's better to buy Min50/1.7 or Sony50/1.4 as they are FF...I can only comment that for less than half the price (compared to 1.4) and with warranty (compared to 1.7), these are already 2 very good reasons to buy 50/1.8 as long as you still can't afford to go FF...