Conflicted

Ok so here's my dilemma I just sold my D3s because its too darn bulky and I'm not a professional. I' just purchased a d600 today (yet to be delivered) and I'm having buyers remorse. D800 with too many megapixels or the D600 with a more plastic body and simpler controls.

Not sure what to get. Thoughts on both?

Any feedback is helpful.