Reviews on Dyson air multiplier & mist with ionizer fans

Perhaps Off-topic here:

I'm considering whether to get Dyson multiplier or fan with mist+ionizer

a) In terms of energy saving, was told that Dyson (those vertical
    models) consume about 65W which is what stand-fans are
    consuming.  Those round Dyson consumes 40W.  So can we
    safely say Dyson air multiplier consumes just as much energy
    as stand-fans.  Mist-fans (like Mistral or Europace) have
    ratings of above 150W, so can we say mist-fans/coolers
    consume more energy?

b) Does those mist/cooler fans give better cooling effect to the
     room & the ions that they produce makes us feel more 'fresh'
    or 'awake' (for students studying for exam or work-at-home?

c) does the humidity given out by mist-fans cause the room to
    grow mold more easily (due to humidity)?  I can always turn
    off the mist (as that model has this feature to 'off' it) if this
    is the case, leaving the ionizer on

d) Does a dry or a humid room make us more 'fresh' / 'awake' ?  

e) The salesperson at the electronics store told me the 'mist'
    could cause rheumatism & some other ailments?  Any links
    that point to research on this is appreciated

f) in terms of dirt accummulation, I can see that Dyson doesn't
   have blades & doesn't collect dust easily & can be easily wiped.
   Does those box-like mist-fan/ionizer accummulate dust/dirt
   easily?

g) Anyone came across any wall-mounts for Dyson fan?  My place
    is small, so mounting on the wall is one way to save space

The price of Mistral mist fan (with ionizer) is about half of a Dyson
vertical fan (prefer vertical than the round ones so that it blows
whole body rather than a spot) at my place here.