When photos are uploaded to the web, it helps to "tag" them with an sRGB color profile so that browsers on Windows systems "See" the right colors...if you capture your images with the camera set to Adobe RGB, but upload them to a storage place, and then they are downloaded and viewed in a Windows browser that translates the images to the *expected* default color space of sRGB, well, the photos will often look kind of dull and lifeless when viewed outside of the editing software that originally was used to handle the photos. (This is a very simplified explanation BTW.) If you capture in Abobe RGB, then you would want to assign an sRGB profile when uploading for web-viewing of the files. Are you doing that? The fact that you say they "lose something" when viewed on the web, but look good in your editing software makes me suspect (know) that there;'s a color profile matching issue going on. It's a huge problem.
First thing is to check what color space the new Sony is set to capture in...I would suggest setting it to sRGB, and living with the ease of use that will bring, in so,so many ways....yes, Adobe RGB is a wider gamut...and we should not eat red meat, eggs, coffee,wheat,corn,soda pop,steak,fish,chicken,cereal,or candy....we should eat only whole,natural foods, and well, you know....but the simple upshot is that almost the entire world is set up to handle sRGB captures and files....RiteAid, Fuji Frontiers, most printing-out setups, inkjets, the Windows OS variants, etc.etc.
So...hand me a Diet Coke...