Hello, Quick question to the masses, a friend of mine in Europe has the Oly 17mm f/1.8 and he SWEARS by it. Now that the family situation that I was holding on to money for has passed, I am looking to pickup some new gear and have come across the following dilemma: 1- Brand new Oly 17mm f/1.8 with warranty and receipt (purchased retail) 2- Used no warranty no receipt Pany 20mm f/1.7 and Pany 14mm f/2.5 3- Brand new Oly 17mm f/1.8 and used Pany 14mm f/2.5 4- Brand new Oly 9-18mm Seems like a no-brainer but I am just worried reg. the used no warranty purchase from Craigslist as I have been had in the past. I would buy on here but I am not going to be in one place long enough over the next few weeks in order to assure receipt of a package. Thoughts? Update: based on the thread the 9-18mm seems to also be a viable option but not sure about how slow it is. All insight is more than welcome!