Had the 900 custom. Liked but not loved it. I felt like I was strapped in a birthing chair. Also the skinny front tire seems to track every pavement break in the road. The "Classic" is a little more traditional both in driver position and tire size.
Someone also mentioned the C50. Again, owned one, but for my riding style, was looking for some longer legs and with shaft, gearing is a little more complicated (although with the C50 there are options). It is quite capable, but at 135 was definitely buzzy.
Many bikes later I now own a Star 950. In your "updated' list, the tubeless tires may come in handy one day. A little more feet under, rather than feet forward so handling, although limited by floorbards which is all too common, is rather nimble.
Loads of +/- comparisons of the 3. All are good bikes - for me the air vs liquid isn't much of an issue but yes, liquid has the minor advantage if you are sitting in stop and go and its 90 degrees.