I'd also love a V'Ger model!
As for the Enterprise, it really depends on what you want out of the toy or model. If you don't mind some inaccuracy, Diamond Select released a very nice "Wrath of Khan" Enterprise to coincide with that film's 30th anniversary, which is to this day the closest we have to a toy of the TMP Enterprise. If you don't mind some assembly, or are looking for a true model, the Round 2 models 1/1000 scale TMP Enterprise also looks particularly nice, and although I have no firsthand experience with it, I have contemplated buying one for myself.
Honorable mention goes to the Hot Wheels TMP Enterprise that was released in 2009 to coincide with the new movie, which I also used to own. It was about 5 or 6 inches long (despite the supposed 1/50 scale, which was totally inaccurate) and mostly plastic, but very nice all the same.