Looking for your opinion. Have a preorder for the E-M1 as well as the 12-40. Have a 2 week vacation planned starting October 16th. Looks like I may get the E-M1 prior to leaving but the 12-40 by all reports seems to be either late October or even December according to Amazon. Which one of the 12-60 or 14-54 would be best to use to temporarily bridge the need? Not going to be keeping it most likely so potential resale value is a factor. Looks like the 14-54 is the cheaper of the two.