[Kenwood] TS-950SD vs TS-950SDX

[JOS Earthlink]

OK, I have a TS-950SD that I'm happy with... Looking to see if there is
anything out there that may have SIGNIFICANTLY improved performace and was
told the SDX is the mother of all rigs.  Can some describe some comparisons
between the rigs and do you think it's worth $100 difference between selling
my TS-950SD to buy a used SDX?
73 Jerry
K1JOS
CCA #11906
CRA #1777