trying to upgrade speakers

nobody offered a home demo on any of the speakers that
i demod.
do the callistos require stands?
just to let you know ,i am fairly new at this high end
stuff thats why i am uncertain about ordering speakers
by mailorder. i did that with the mobile fidelitys
and after a while realized i wanted something with
a better midrange and bass.

will the green mountain callistas give me a bigger sound than the mobile fidelitys that i have?
the size of the tweeter and woofers are pretty similar

i live in the new york city area and there is
no way i know of short of actually ordering apair of
ither tyler acoustic linbrooks or the green mountain
callistos. most dealers ive been to are pushing
speakers that they sell (obviously), which is why
ive only heard b and w triangle spendor and a few others.

had a chance to hear the eminent tec lft 8
loved the sound but a little concerned about the low sensitivity and the difficulty in setup.
i have a musical fidelity x-150 int amp
would apreciate anybodys comments

definately consideres spendors to be an upgrade
but i then heard about the green mountain callistos
which i also checked out. also heard the devore gibbon 8
which i also liked. unfortunately i cant hear them at once with the same equipment so im uncetain about making a decision.
i also may have an opportunity to trade in my musical fidelity x-150 for an a-5 (MF) but was also thinking about checking out tube integrateds such as the prima lunaprologue two or the pathos acoustic clssic one.