so if weekly rate is 1.40% ( 67.2% yearly if you park weekly) .. Then yearly parking will be the best option at 70%.
You should also count this, when you park your coins you lock that interest rate. If you park yearly %70 and then interest rate fall down to %30 you still get your %70 interest. This is good for long term holders. Weekly rates are changing sometimes 2 times a day. The market is immature yet.
yes for long time investors yearly will be the best option if you will look at the price growth of minexcoin now, then the 70% yearly interest will not be there to stay.