The fact that you've bought another Sony speaks volumes. If you like your 650 as much as I do mine, then undoubtedly you'll be well pleased. Have fun.
PS - I too bought a charger, but my 650 arrived with its battery already charged. I find that in day-to-day use the battery is kept topped up via the USB cable, whenever newspaper articles that I have downloaded via Calibre are transferred, so I haven't needed to use the charger. However, I am sure it will be useful when travelling. I really like the cover too and am impressed by the light's ergonomic design.