I've been entertaining the idea of consolidating the rest of my Nikon kit into Sony, but I have a few questions for those that own the lenses I'm looking at. I'm mainly looking at the 24-70mm f4 and 70-200mm f4 FE lenses. I currently have the 24-120mm f4 VR and 70-200mm f4 VR for Nikon. The 24-120mm f4 VR is okay up until 105mm and softens up at 120mm and needs some stopping down to get sharp, the good thing is they're cheap ($400-500) and pretty good from 24mm to 105mm with nice contrast and colors. I've heard mixed reports of the Sony 24-70mm being less sharp, but most agree it's sharp in the middle which isn't a problem for me. Next is the Sony 70-200mm f4 FE and that's the lens I'm most concerned about. DXO rates it less sharp when comparing it to the Nikon 70-200mm f4 VR, which is the second sharpest telephoto zoom lens in Nikon's line-up. My other concern are the reports of Sony 70-200mm f4 lenses snapping in two halves. I've never seen that issue with other 70-200mm lenses, so it kind of worries me, especially since Sony doesn't directly repair their equipment like Nikon. I'm not sure if this problem has been rectified or if it's something to be still concerned about. Ideally, if Tamron was also doing a 70-200mm f4 FE in conjunction with the upcoming 28-75mm 2.8 FE, that would make my decision much easier! Anyways, input would be appreciated. Thanks!