cameras seem to be changing so quickly these days - every month
in the days of
film cameras there was 35mm format which dominated - with cameras, the SLR with interchangeable lens and say the 35mm fixed lens compact - (OK there were others - but not anywhere near as popular)
no there is an overwhelming choice - and you almost need three or four cameras to cover all shooting situations
I feel that I need the following
1). A conventional DX DSLR with an array of lens - certainly a 300mm fixed or tele and a Macro plus MF lens - Nikon D300
2). An RF cam or RF "style" - M8 or say a Ricoh or Sigma or
Fuji X100 - throw some good glass in there
3). an M43 cam or similar - G series Pana or EP Oly - with an array of lens
4). a super (pocketable) compact - S95 or similar
5). Now maybe a bridge with a super tele zoom - say up to 600mm + - HS20 or the new XS whatever they call it
all the above are different - IQ for one - but other differences and (preferences)
I'd consider others before the X100 to give you more flexibility
(but others will be announced every month to confuse us further - the OM-D looks interesting)