Firstly, those wheels look superb.
The differences between hard and soft bottom are pretty big, but it is not a case of one being superior. Both suit different needs.
Over the years we have fitted out SIBs to such an extent that we can honestly say we have explored the definition.
With a SIB that has good quality floor panels and an inflating keel section to get a lot of the positive characteristics of a shallow-V hulled RIB, but with the added advantage that they can be rolled up and stored or transported in a way that RIBs cannot.
But then you get into the discussion about deep-V and shallow-V hulls, the sea keeping qualities of the latter are no where near that of the deep cutting hard bottomed boats.
If you are not going out in a big sea at speed and plan to beach often and man handle the boat with wheels then a good SIB will suit you to well.
If you want to go out in the rough stuff then you need a RIB and all that goes with it, ie trailer & bigger engine.