I am a Nikon user but one suggestion to consider. Either of the two main DSLR brands Nikon and Canon have the biggest range of non OEM equipment available. Especially in terms of Lenses. It is possible to use Nikon lenses that are over 40 years old. Yes I know that they have to be manually operated but this allows a huge variety to be considered. With the Sony there is a possibility that alternative lenses may not be so cost effective.
The best advice is just go to a good camera shop and try a few out.