option (1) is not a competitor to options (2) and (3).
in spite of the rrp still up around the place on a superceded model - the maxi is really the 2k range, the other 2, 2.5k range - bigger boilers, current models.
The parts inside the machines are reasonably ubiquitous - and should be pretty much identical to the diadema regal 1.3 - its just buying last years model - model changes are evolutionary not revolutionary, and principally around looks - bit like a car model facelift! ;D
I think most people would say the other 2 options are better than the first - but as said - they aint in the same portion of the market imo