  The recent RCNP $(\alpha, \alpha')$ data on the Isoscalar Giant Monopole
Resonance (ISGMR) and Isoscalar Giant Quadrupole Resonance (ISGQR) in
$^{92,94,96,98,100}$Mo are analyzed within a fully self-consistent
Quasiparticle Random Phase Approximation (QRPA) approach with Skyrme
interactions, in which pairing correlations and possible axial deformations are
taken into account. The Skyrme sets SkM*, SLy6, SVbas and SkP$^{\delta}$, that
explore a diversity of nuclear matter properties, are used. We discuss the
connection between the line shape of the monopole strength ISGMR and the
deformation-induced coupling between the ISGMR and the $K=0$ branch of the
ISGQR. The ISGMR centroid energy is best described by the force SkP$^{\delta}$,
having a low incompressibility $K_{\infty}$ = 202 MeV. The ISGQR data are
better reproduced by SVbas, that has large isoscalar effective mass $m^*/m$ =
0.9. The need of describing simultaneously the ISGMR and ISGQR data is
stressed, with the requirement of suitable values of $K_\infty$ and $m^*/m$.
Possible extensions of the QRPA to deal with soft systems are also envisaged.
