Yes, I believe your advice is the right one for me. Will try to get hold of a used but good D90. If if does not come soon, I will wait for the D7100 or whatever name they give to its replacement. I am very satisfied with the D7000 I have been enjoying its learning process. Have no FX WANT....yet and hope I can defuse it when it comes.
Thanks to all who gave valuable advice on this subject.